diff --git a/apps/desktop/src/components/editor/EditorSettingsDialog.vue b/apps/desktop/src/components/editor/EditorSettingsDialog.vue
index 5fdfc9ad58..d478d563a2 100644
--- a/apps/desktop/src/components/editor/EditorSettingsDialog.vue
+++ b/apps/desktop/src/components/editor/EditorSettingsDialog.vue
@@ -333,6 +333,7 @@ const debugLogCopied = ref(false);
 const debugLogDownloaded = ref(false);
 const editShowColumnCommentsInHeader = ref(settingsStore.editorSettings.showColumnCommentsInHeader);
 const editShowColumnTypesInHeader = ref(settingsStore.editorSettings.showColumnTypesInHeader);
+const editShowIndexIndicatorsInHeader = ref(settingsStore.editorSettings.showIndexIndicatorsInHeader);
 const editCompactColumnHeaderActions = ref(settingsStore.editorSettings.compactColumnHeaderActions);
 const editDataGridQuickEntry = ref(settingsStore.editorSettings.dataGridQuickEntry);
 const editDataGridAutoTransposeSingleRow = ref(settingsStore.editorSettings.dataGridAutoTransposeSingleRow);
@@ -485,6 +486,7 @@ function currentEditorSettingsDraft(): EditorSettingsDraft {
     tabLayout: editTabLayout.value,
     showColumnCommentsInHeader: editShowColumnCommentsInHeader.value,
     showColumnTypesInHeader: editShowColumnTypesInHeader.value,
+    showIndexIndicatorsInHeader: editShowIndexIndicatorsInHeader.value,
     compactColumnHeaderActions: editCompactColumnHeaderActions.value,
     dataGridQuickEntry: editDataGridQuickEntry.value,
     dataGridAutoTransposeSingleRow: editDataGridAutoTransposeSingleRow.value,
@@ -752,6 +754,7 @@ function syncEditorSettingsDraftFromStore() {
   editTabLayout.value = settingsStore.editorSettings.tabLayout;
   editShowColumnCommentsInHeader.value = settingsStore.editorSettings.showColumnCommentsInHeader;
   editShowColumnTypesInHeader.value = settingsStore.editorSettings.showColumnTypesInHeader;
+  editShowIndexIndicatorsInHeader.value = settingsStore.editorSettings.showIndexIndicatorsInHeader;
   editCompactColumnHeaderActions.value = settingsStore.editorSettings.compactColumnHeaderActions;
   editDataGridQuickEntry.value = settingsStore.editorSettings.dataGridQuickEntry;
   editDataGridAutoTransposeSingleRow.value = settingsStore.editorSettings.dataGridAutoTransposeSingleRow;
@@ -989,6 +992,7 @@ function resetDefaultsForTab(tab: SettingsCategory) {
   } else if (tab === "data") {
     editShowColumnCommentsInHeader.value = DEFAULT_EDITOR_SETTINGS.showColumnCommentsInHeader;
     editShowColumnTypesInHeader.value = DEFAULT_EDITOR_SETTINGS.showColumnTypesInHeader;
+    editShowIndexIndicatorsInHeader.value = DEFAULT_EDITOR_SETTINGS.showIndexIndicatorsInHeader;
     editCompactColumnHeaderActions.value = DEFAULT_EDITOR_SETTINGS.compactColumnHeaderActions;
     editDataGridQuickEntry.value = DEFAULT_EDITOR_SETTINGS.dataGridQuickEntry;
     editDataGridAutoTransposeSingleRow.value = DEFAULT_EDITOR_SETTINGS.dataGridAutoTransposeSingleRow;
@@ -1052,6 +1056,7 @@ function resetAllDefaults() {
   editSidebarTablePageSize.value = DEFAULT_SIDEBAR_TABLE_PAGE_SIZE;
   editShowColumnCommentsInHeader.value = DEFAULT_EDITOR_SETTINGS.showColumnCommentsInHeader;
   editShowColumnTypesInHeader.value = DEFAULT_EDITOR_SETTINGS.showColumnTypesInHeader;
+  editShowIndexIndicatorsInHeader.value = DEFAULT_EDITOR_SETTINGS.showIndexIndicatorsInHeader;
   editCompactColumnHeaderActions.value = DEFAULT_EDITOR_SETTINGS.compactColumnHeaderActions;
   editDataGridQuickEntry.value = DEFAULT_EDITOR_SETTINGS.dataGridQuickEntry;
   editDataGridAutoTransposeSingleRow.value = DEFAULT_EDITOR_SETTINGS.dataGridAutoTransposeSingleRow;
@@ -4325,6 +4330,17 @@ onUnmounted(() => {
                   </div>
                   <Switch id="show-column-types-in-header" v-model="editShowColumnTypesInHeader" />
                 </div>
+                <div class="flex items-center justify-between gap-4 rounded-md border bg-muted/20 px-3 py-2">
+                  <div class="space-y-1">
+                    <Label for="show-index-indicators-in-header">
+                      {{ t("settings.showIndexIndicatorsInHeader") }}
+                    </Label>
+                    <p class="text-xs text-muted-foreground">
+                      {{ t("settings.showIndexIndicatorsInHeaderDescription") }}
+                    </p>
+                  </div>
+                  <Switch id="show-index-indicators-in-header" v-model="editShowIndexIndicatorsInHeader" />
+                </div>
                 <div class="flex items-center justify-between gap-4 rounded-md border bg-muted/20 px-3 py-2">
                   <div class="space-y-1">
                     <Label for="compact-column-header-actions">
diff --git a/apps/desktop/src/components/grid/DataGrid.vue b/apps/desktop/src/components/grid/DataGrid.vue
index b286e4c1fc..d8f974ba20 100644
--- a/apps/desktop/src/components/grid/DataGrid.vue
+++ b/apps/desktop/src/components/grid/DataGrid.vue
@@ -230,6 +230,7 @@ import { getTableMetadataCapabilities } from "@/lib/table/tableMetadataCapabilit
 import { getTableStructureCapabilities } from "@/lib/table/tableStructureCapabilities";
 import { filterObjectBrowserTableColumns } from "@/lib/table/objectBrowserTableInfo";
 import { reserveDataGridHeaderLine } from "@/lib/dataGrid/dataGridHeaderLayout";
+import { buildColumnIndexMap, columnIndexMetadataRequestCurrent, columnIndexNameKey, columnIndexTableIdentity } from "@/lib/dataGrid/dataGridColumnIndexIcon";
 import { supportsTableStructureEditing } from "@/lib/database/databaseCapabilities";
 import { rememberDataGridConditionHistory } from "@/lib/dataGrid/dataGridConditionHistory";
 import { restoreDataGridLocalColumnFilters, serializeDataGridLocalColumnFilters } from "@/lib/dataGrid/dataGridLocalColumnFilterState";
@@ -495,6 +496,15 @@ const dataGridTopbarWidth = ref(0);
 const dataGridViewportWidth = ref(0);
 const showColumnCommentsInHeader = computed(() => settingsStore.editorSettings.showColumnCommentsInHeader);
 const showColumnTypesInHeader = computed(() => settingsStore.editorSettings.showColumnTypesInHeader);
+const showIndexIndicatorsInHeader = computed(() => settingsStore.editorSettings.showIndexIndicatorsInHeader !== false);
+const primaryKeyColumnNames = computed(() => {
+  const names = new Set(props.tableMeta?.primaryKeys ?? []);
+  for (const column of props.tableMeta?.columns ?? []) {
+    if (column.is_primary_key) names.add(column.name);
+  }
+  return [...names];
+});
+const columnIndexMap = computed(() => buildColumnIndexMap(indexes.value, primaryKeyColumnNames.value));
 const compactColumnHeaderActions = computed(() => settingsStore.editorSettings.compactColumnHeaderActions);
 const dataGridRenderMode = computed(() => settingsStore.editorSettings.dataGridRenderMode);
 const dataGridSearchMode = computed(() => settingsStore.editorSettings.dataGridSearchMode);
@@ -7480,6 +7490,16 @@ const indexes = ref<IndexInfo[]>([]);
 const indexesLoaded = ref(false);
 const indexesLoading = ref(false);
 const indexesError = ref("");
+const currentIndexTableIdentity = computed(() =>
+  columnIndexTableIdentity({
+    connectionId: props.connectionId,
+    database: props.database,
+    catalog: props.tableMeta?.catalog,
+    schema: props.tableMeta?.schema,
+    tableName: props.tableMeta?.tableName,
+  }),
+);
+let indexesRequestGeneration = 0;
 const showDropMongoIndexConfirm = ref(false);
 const dropMongoIndexLoading = ref(false);
 const pendingDropMongoIndex = ref<IndexInfo | null>(null);
@@ -7673,16 +7693,26 @@ async function fetchDdl() {
 }
 
 async function fetchIndexes() {
-  if (!props.connectionId || !props.tableMeta || indexesLoaded.value || indexesLoading.value) return;
+  const requestIdentity = currentIndexTableIdentity.value;
+  if (!props.connectionId || !props.tableMeta || !canShowTableIndexes.value || !requestIdentity || indexesLoaded.value || indexesLoading.value) return;
+  const connectionId = props.connectionId;
+  const database = props.database || "";
+  const schema = props.tableMeta.schema || props.database || "";
+  const tableName = props.tableMeta.tableName;
+  const catalog = props.tableMeta.catalog;
+  const requestGeneration = ++indexesRequestGeneration;
   indexesLoading.value = true;
   indexesError.value = "";
   try {
-    indexes.value = await api.listIndexes(props.connectionId, props.database || "", props.tableMeta.schema || props.database || "", props.tableMeta.tableName, props.tableMeta.catalog);
+    const nextIndexes = await api.listIndexes(connectionId, database, schema, tableName, catalog);
+    if (!columnIndexMetadataRequestCurrent({ requestGeneration, currentGeneration: indexesRequestGeneration, requestIdentity, currentIdentity: currentIndexTableIdentity.value })) return;
+    indexes.value = nextIndexes;
     indexesLoaded.value = true;
   } catch (e: any) {
+    if (!columnIndexMetadataRequestCurrent({ requestGeneration, currentGeneration: indexesRequestGeneration, requestIdentity, currentIdentity: currentIndexTableIdentity.value })) return;
     indexesError.value = String(e?.message || e);
   } finally {
-    indexesLoading.value = false;
+    if (columnIndexMetadataRequestCurrent({ requestGeneration, currentGeneration: indexesRequestGeneration, requestIdentity, currentIdentity: currentIndexTableIdentity.value })) indexesLoading.value = false;
   }
 }
 
@@ -7748,7 +7778,9 @@ watch(
     ddlContent.value = "";
     indexes.value = [];
     indexesLoaded.value = false;
+    indexesLoading.value = false;
     indexesError.value = "";
+    indexesRequestGeneration += 1;
     foreignKeys.value = [];
     foreignKeysLoaded.value = false;
     foreignKeysLoading.value = false;
@@ -7761,6 +7793,14 @@ watch(
   },
 );
 
+watch(
+  () => [showIndexIndicatorsInHeader.value, canShowTableIndexes.value, currentIndexTableIdentity.value] as const,
+  ([showIndicators, canShowIndexes, tableIdentity]) => {
+    if (showIndicators && canShowIndexes && tableIdentity) void fetchIndexes();
+  },
+  { immediate: true },
+);
+
 // ---- 外键单元格跳转 ----
 const columnForeignKeyMap = computed(() => buildColumnForeignKeyMap(foreignKeys.value));
 const foreignKeyNavigationEnabled = computed(() => !!props.connectionId && !!props.tableMeta?.tableName && tableMetadataCapabilities.value.foreignKeys);
@@ -8941,6 +8981,11 @@ const gridContextMenuItems = computed<ContextMenuItem[]>(() => {
                     :column-name-label="t('grid.columnName')"
                     :column-type-label="t('grid.columnType')"
                     :column-comment-label="t('grid.columnComment')"
+                    :column-index-label="t('grid.tableInfoIndexes')"
+                    :column-primary-index-label="t('grid.columnPrimaryIndex')"
+                    :column-unique-index-label="t('grid.columnUniqueIndex')"
+                    :column-regular-index-label="t('grid.columnRegularIndex')"
+                    :column-index-kind="showIndexIndicatorsInHeader ? columnIndexMap.get(columnIndexNameKey(col.name)) : undefined"
                     @pointerdown="startColumnHeaderDrag(col.visibleColIdx, $event)"
                     @click-capture="onHeaderClickCapture"
                     @click="onHeaderClick(col.visibleColIdx, $event)"
diff --git a/apps/desktop/src/components/grid/DataGridColumnHeader.vue b/apps/desktop/src/components/grid/DataGridColumnHeader.vue
index a87f919a3b..29dda8068a 100644
--- a/apps/desktop/src/components/grid/DataGridColumnHeader.vue
+++ b/apps/desktop/src/components/grid/DataGridColumnHeader.vue
@@ -1,9 +1,10 @@
 <script setup lang="ts">
 import type { CSSProperties, HTMLAttributes } from "vue";
-import { Copy } from "@lucide/vue";
+import { Copy, KeyRound, Hash } from "@lucide/vue";
 import LightTooltip from "@/components/ui/LightTooltip.vue";
+import { columnIndexColorClass, type ColumnIndexKind } from "@/lib/dataGrid/dataGridColumnIndexIcon";
 
-defineProps<{
+const props = defineProps<{
   name: string;
   actualColumnIndex: number;
   visibleColumnIndex: number;
@@ -26,8 +27,21 @@ defineProps<{
   columnNameLabel: string;
   columnTypeLabel: string;
   columnCommentLabel: string;
+  columnIndexLabel: string;
+  columnPrimaryIndexLabel: string;
+  columnUniqueIndexLabel: string;
+  columnRegularIndexLabel: string;
+  /** 该列的索引类型，undefined 时不显示标识 */
+  columnIndexKind?: ColumnIndexKind;
 }>();
 
+function columnIndexText(kind: ColumnIndexKind): string {
+  if (kind === "primary") return props.columnPrimaryIndexLabel;
+  if (kind === "unique") return props.columnUniqueIndexLabel;
+  if (kind === "index") return props.columnRegularIndexLabel;
+  return "";
+}
+
 const emit = defineEmits<{
   pointerdown: [event: PointerEvent];
   clickCapture: [event: MouseEvent];
@@ -60,6 +74,9 @@ const emit = defineEmits<{
       @contextmenu="emit('contextmenu', $event)"
     >
       <span class="flex min-w-0 items-center gap-1 overflow-hidden">
+        <!-- 索引标识：显示在列名左侧 -->
+        <KeyRound v-if="columnIndexKind === 'primary'" class="h-3 w-3 shrink-0" :class="columnIndexColorClass(columnIndexKind)" :title="columnIndexText(columnIndexKind)" />
+        <Hash v-else-if="columnIndexKind && columnIndexKind !== 'none'" class="h-3 w-3 shrink-0" :class="columnIndexColorClass(columnIndexKind)" :title="columnIndexText(columnIndexKind)" />
         <span class="flex min-w-0 flex-1 flex-col overflow-hidden">
           <span class="min-w-0 truncate leading-4">{{ name }}</span>
           <span v-if="showTypeLine" data-grid-header-type-line class="h-3 min-w-0 truncate text-[10px] font-normal leading-3" :class="[typeClass, { invisible: !columnType }]" :title="columnType || undefined" :aria-hidden="columnType ? undefined : true">{{ columnType }}</span>
@@ -88,6 +105,14 @@ const emit = defineEmits<{
           <span class="text-background/70">{{ columnCommentLabel }}</span>
           <span>{{ tooltipColumnComment ?? columnComment }}</span>
         </template>
+        <template v-if="columnIndexKind && columnIndexKind !== 'none'">
+          <span class="text-background/70">{{ columnIndexLabel }}</span>
+          <span class="flex items-center gap-1">
+            <KeyRound v-if="columnIndexKind === 'primary'" class="h-3 w-3" :class="columnIndexColorClass(columnIndexKind)" />
+            <Hash v-else class="h-3 w-3" :class="columnIndexColorClass(columnIndexKind)" />
+            <span :class="columnIndexColorClass(columnIndexKind)">{{ columnIndexText(columnIndexKind) }}</span>
+          </span>
+        </template>
       </div>
     </template>
   </LightTooltip>
diff --git a/apps/desktop/src/i18n/locales/en.ts b/apps/desktop/src/i18n/locales/en.ts
index 1bc3d9e971..07e6270e28 100644
--- a/apps/desktop/src/i18n/locales/en.ts
+++ b/apps/desktop/src/i18n/locales/en.ts
@@ -1526,6 +1526,9 @@ export default {
     tableInfo: "Table Info",
     tableInfoColumns: "Columns",
     tableInfoIndexes: "Indexes",
+    columnPrimaryIndex: "Primary key index",
+    columnUniqueIndex: "Unique index",
+    columnRegularIndex: "Regular index",
     tableInfoForeignKeys: "Foreign Keys",
     foreignKeyNavigate: "Go to {table}",
     tableInfoTriggers: "Triggers",
@@ -5013,6 +5016,8 @@ export default {
     showColumnCommentsInHeaderDescription: "Display table column comments directly below grid column names.",
     showColumnTypesInHeader: "Show column types under names",
     showColumnTypesInHeaderDescription: "Display each column's data type directly below grid column names.",
+    showIndexIndicatorsInHeader: "Show index indicators beside column names",
+    showIndexIndicatorsInHeaderDescription: "Use icons to indicate each column's index type in the grid header: primary key (orange), unique index (red), regular index (green).",
     compactColumnHeaderActions: "Compact column header tools",
     compactColumnHeaderActionsDescription: "Move formatter and local filter tools into a more menu so column names get priority.",
     dataGridQuickEntry: "Quick grid entry",
diff --git a/apps/desktop/src/i18n/locales/es.ts b/apps/desktop/src/i18n/locales/es.ts
index 0092fe7df7..f00f3a4884 100644
--- a/apps/desktop/src/i18n/locales/es.ts
+++ b/apps/desktop/src/i18n/locales/es.ts
@@ -1414,6 +1414,9 @@ export default withEnglishFallback({
     tableInfo: "Información de tabla",
     tableInfoColumns: "Columnas",
     tableInfoIndexes: "Índices",
+    columnPrimaryIndex: "Índice de clave primaria",
+    columnUniqueIndex: "Índice único",
+    columnRegularIndex: "Índice normal",
     tableInfoForeignKeys: "Claves foráneas",
     foreignKeyNavigate: "Ir a {table}",
     tableInfoTriggers: "Disparadores",
@@ -4790,6 +4793,8 @@ export default withEnglishFallback({
     showColumnCommentsInHeaderDescription: "Muestra los comentarios de columnas directamente debajo del nombre de la columna.",
     showColumnTypesInHeader: "Mostrar tipos de columna bajo los nombres",
     showColumnTypesInHeaderDescription: "Muestra el tipo de dato de cada columna directamente debajo del nombre de la columna.",
+    showIndexIndicatorsInHeader: "Mostrar indicadores de índice junto a los nombres",
+    showIndexIndicatorsInHeaderDescription: "Usa iconos para indicar el tipo de índice de cada columna en el encabezado: clave primaria (naranja), índice único (rojo), índice regular (verde).",
     compactColumnHeaderActions: "Compactar herramientas del encabezado",
     compactColumnHeaderActionsDescription: "Mueve formatear y filtrar a un menú de más acciones para priorizar el nombre de columna.",
     dataGridQuickEntry: "Entrada rápida en grilla",
diff --git a/apps/desktop/src/i18n/locales/it.ts b/apps/desktop/src/i18n/locales/it.ts
index 73531a0069..b159bf0546 100644
--- a/apps/desktop/src/i18n/locales/it.ts
+++ b/apps/desktop/src/i18n/locales/it.ts
@@ -1403,6 +1403,9 @@ export default withEnglishFallback({
     tableInfo: "Informazioni Tabella",
     tableInfoColumns: "Colonne",
     tableInfoIndexes: "Indici",
+    columnPrimaryIndex: "Indice chiave primaria",
+    columnUniqueIndex: "Indice univoco",
+    columnRegularIndex: "Indice normale",
     tableInfoForeignKeys: "Chiavi Esterne",
     foreignKeyNavigate: "Vai a {table}",
     tableInfoTriggers: "Trigger",
@@ -4790,6 +4793,8 @@ export default withEnglishFallback({
     showColumnCommentsInHeaderDescription: "Visualizza i commenti delle colonne della tabella direttamente sotto i nomi delle colonne nella griglia.",
     showColumnTypesInHeader: "Mostra i tipi di colonna sotto i nomi",
     showColumnTypesInHeaderDescription: "Visualizza il tipo di dato di ciascuna colonna direttamente sotto i nomi delle colonne nella griglia.",
+    showIndexIndicatorsInHeader: "Mostra gli indicatori di indice accanto ai nomi",
+    showIndexIndicatorsInHeaderDescription: "Utilizza icone per indicare il tipo di indice di ciascuna colonna nell'intestazione: chiave primaria (arancione), indice univoco (rosso), indice normale (verde).",
     compactColumnHeaderActions: "Strumenti intestazione colonna compatti",
     compactColumnHeaderActionsDescription: "Sposta gli strumenti del formattatore e dei filtri locali in un menu 'altro' in modo che i nomi delle colonne abbiano la priorità.",
     dataGridQuickEntry: "Inserimento rapido griglia",
diff --git a/apps/desktop/src/i18n/locales/ja.ts b/apps/desktop/src/i18n/locales/ja.ts
index d8dbf8cf61..9e21d23709 100644
--- a/apps/desktop/src/i18n/locales/ja.ts
+++ b/apps/desktop/src/i18n/locales/ja.ts
@@ -1421,6 +1421,9 @@ export default withEnglishFallback({
     tableInfo: "テーブル情報",
     tableInfoColumns: "列",
     tableInfoIndexes: "インデックス",
+    columnPrimaryIndex: "主キーインデックス",
+    columnUniqueIndex: "ユニークインデックス",
+    columnRegularIndex: "通常インデックス",
     tableInfoForeignKeys: "外部キー",
     foreignKeyNavigate: "{table} へ移動",
     tableInfoTriggers: "トリガー",
@@ -4827,6 +4830,8 @@ export default withEnglishFallback({
     showColumnCommentsInHeaderDescription: "グリッド列名の直下にテーブル列コメントを表示します。",
     showColumnTypesInHeader: "列名の下にデータ型を表示",
     showColumnTypesInHeaderDescription: "グリッド列名の直下に各列のデータ型を表示します。",
+    showIndexIndicatorsInHeader: "列名の横にインデックス指標を表示",
+    showIndexIndicatorsInHeaderDescription: "グリッド列ヘッダーにインデックスの種類をアイコンで表示します：主キー（オレンジ）、一意インデックス（赤）、通常インデックス（緑）。",
     compactColumnHeaderActions: "列ヘッダーツールをコンパクトに",
     compactColumnHeaderActionsDescription: "フォーマッターとローカルフィルターツールをもっと見るメニューに移動し、列名を優先表示します。",
     dataGridQuickEntry: "グリッド高速入力",
diff --git a/apps/desktop/src/i18n/locales/ko.ts b/apps/desktop/src/i18n/locales/ko.ts
index 6c20cd0343..682dfcee29 100644
--- a/apps/desktop/src/i18n/locales/ko.ts
+++ b/apps/desktop/src/i18n/locales/ko.ts
@@ -1421,6 +1421,9 @@ export default withEnglishFallback({
     tableInfo: "테이블 정보",
     tableInfoColumns: "컬럼",
     tableInfoIndexes: "인덱스",
+    columnPrimaryIndex: "기본 키 인덱스",
+    columnUniqueIndex: "고유 인덱스",
+    columnRegularIndex: "일반 인덱스",
     tableInfoForeignKeys: "외래 키",
     foreignKeyNavigate: "{table}(으)로 이동",
     tableInfoTriggers: "트리거",
@@ -4555,6 +4558,8 @@ export default withEnglishFallback({
     showColumnCommentsInHeaderDescription: "그리드 컬럼 이름 바로 아래에 테이블 컬럼 주석을 표시합니다.",
     showColumnTypesInHeader: "이름 아래에 컬럼 타입 표시",
     showColumnTypesInHeaderDescription: "그리드 컬럼 이름 바로 아래에 각 컬럼의 데이터 타입을 표시합니다.",
+    showIndexIndicatorsInHeader: "컬럼 이름 옆에 인덱스 표시",
+    showIndexIndicatorsInHeaderDescription: "그리드 컬럼 헤더에 인덱스 유형을 아이콘으로 표시합니다: 기본키(주황색), 고유 인덱스(빨간색), 일반 인덱스(녹색).",
     compactColumnHeaderActions: "컴팩트한 컬럼 머리글 도구",
     compactColumnHeaderActionsDescription: "포매터와 로컬 필터 도구를 더보기 메뉴로 이동하여 컬럼 이름에 우선순위를 둡니다.",
     dataGridQuickEntry: "빠른 그리드 입력",
diff --git a/apps/desktop/src/i18n/locales/pt-BR.ts b/apps/desktop/src/i18n/locales/pt-BR.ts
index ad8ce2c284..5a59a54437 100644
--- a/apps/desktop/src/i18n/locales/pt-BR.ts
+++ b/apps/desktop/src/i18n/locales/pt-BR.ts
@@ -1405,6 +1405,9 @@ export default withEnglishFallback({
     tableInfo: "Informações da Tabela",
     tableInfoColumns: "Colunas",
     tableInfoIndexes: "Índices",
+    columnPrimaryIndex: "Índice de chave primária",
+    columnUniqueIndex: "Índice exclusivo",
+    columnRegularIndex: "Índice comum",
     tableInfoForeignKeys: "Chaves Estrangeiras",
     foreignKeyNavigate: "Ir para {table}",
     tableInfoTriggers: "Gatilhos",
@@ -4792,6 +4795,8 @@ export default withEnglishFallback({
     showColumnCommentsInHeaderDescription: "Exibir comentários de colunas da tabela diretamente abaixo dos nomes das colunas da grade.",
     showColumnTypesInHeader: "Mostrar tipos de coluna sob os nomes",
     showColumnTypesInHeaderDescription: "Exibir o tipo de dado de cada coluna diretamente abaixo dos nomes das colunas da grade.",
+    showIndexIndicatorsInHeader: "Mostrar indicadores de índice ao lado dos nomes",
+    showIndexIndicatorsInHeaderDescription: "Use ícones para indicar o tipo de índice de cada coluna no cabeçalho: chave primária (laranja), índice exclusivo (vermelho), índice regular (verde).",
     compactColumnHeaderActions: "Ferramentas compactas no cabeçalho da coluna",
     compactColumnHeaderActionsDescription: "Mover as ferramentas de formatação e filtro local para um menu de mais opções para que os nomes das colunas tenham prioridade.",
     dataGridQuickEntry: "Entrada rápida na grade",
diff --git a/apps/desktop/src/i18n/locales/zh-CN.ts b/apps/desktop/src/i18n/locales/zh-CN.ts
index 18f3285fbe..1905080a13 100644
--- a/apps/desktop/src/i18n/locales/zh-CN.ts
+++ b/apps/desktop/src/i18n/locales/zh-CN.ts
@@ -1527,6 +1527,9 @@ export default withEnglishFallback({
     tableInfo: "表属性",
     tableInfoColumns: "字段",
     tableInfoIndexes: "索引",
+    columnPrimaryIndex: "主键索引",
+    columnUniqueIndex: "唯一索引",
+    columnRegularIndex: "普通索引",
     tableInfoForeignKeys: "外键",
     foreignKeyNavigate: "跳转到 {table}",
     tableInfoTriggers: "触发器",
@@ -5011,6 +5014,8 @@ export default withEnglishFallback({
     showColumnCommentsInHeaderDescription: "把表字段注释直接显示在结果表头字段名下方。",
     showColumnTypesInHeader: "在字段名下方显示数据类型",
     showColumnTypesInHeaderDescription: "把每个字段的数据类型直接显示在结果表头字段名下方。",
+    showIndexIndicatorsInHeader: "在字段名旁显示索引标识",
+    showIndexIndicatorsInHeaderDescription: "在结果表头字段名旁用图标标识字段的索引类型：主键（橙色）、唯一索引（红色）、普通索引（绿色）。",
     compactColumnHeaderActions: "收起字段表头工具",
     compactColumnHeaderActionsDescription: "将格式化、本地筛选收进更多菜单，优先显示字段名称。",
     dataGridQuickEntry: "表格快捷录入",
diff --git a/apps/desktop/src/i18n/locales/zh-TW.ts b/apps/desktop/src/i18n/locales/zh-TW.ts
index 6ac6635199..6cb06a38ef 100644
--- a/apps/desktop/src/i18n/locales/zh-TW.ts
+++ b/apps/desktop/src/i18n/locales/zh-TW.ts
@@ -1405,6 +1405,9 @@ export default withEnglishFallback({
     tableInfo: "資料表屬性",
     tableInfoColumns: "欄位",
     tableInfoIndexes: "索引",
+    columnPrimaryIndex: "主鍵索引",
+    columnUniqueIndex: "唯一索引",
+    columnRegularIndex: "一般索引",
     tableInfoForeignKeys: "外鍵",
     foreignKeyNavigate: "跳轉到 {table}",
     tableInfoTriggers: "觸發器",
@@ -4253,6 +4256,8 @@ export default withEnglishFallback({
     showColumnCommentsInHeaderDescription: "直接在資料表格欄位名稱下方顯示資料表欄位註解。",
     showColumnTypesInHeader: "在欄位名稱下方顯示資料類型",
     showColumnTypesInHeaderDescription: "直接在資料表格欄位名稱下方顯示每個欄位的資料類型。",
+    showIndexIndicatorsInHeader: "在欄位名稱旁顯示索引標識",
+    showIndexIndicatorsInHeaderDescription: "在資料表格欄位名稱旁用圖示標識欄位的索引類型：主鍵（橙色）、唯一索引（紅色）、普通索引（綠色）。",
     compactColumnHeaderActions: "收起欄位表頭工具",
     compactColumnHeaderActionsDescription: "將格式設定和本機篩選工具移到更多選單，讓欄位名稱優先顯示。",
     dataGridQuickEntry: "表格快速輸入",
diff --git a/apps/desktop/src/lib/__tests__/dataGrid/dataGridColumnIndexIcon.spec.ts b/apps/desktop/src/lib/__tests__/dataGrid/dataGridColumnIndexIcon.spec.ts
new file mode 100644
index 0000000000..9125db0e35
--- /dev/null
+++ b/apps/desktop/src/lib/__tests__/dataGrid/dataGridColumnIndexIcon.spec.ts
@@ -0,0 +1,70 @@
+import { describe, expect, it } from "vitest";
+import { buildColumnIndexMap, columnIndexMetadataRequestCurrent, columnIndexNameKey, columnIndexTableIdentity } from "@/lib/dataGrid/dataGridColumnIndexIcon";
+import type { IndexInfo } from "@/types/database";
+
+function indexInfo(overrides: Partial<IndexInfo>): IndexInfo {
+  return {
+    name: "idx_users_email",
+    columns: ["email"],
+    is_unique: false,
+    is_primary: false,
+    ...overrides,
+  };
+}
+
+describe("buildColumnIndexMap", () => {
+  it("uses column metadata for custom-named and composite primary keys", () => {
+    const map = buildColumnIndexMap([indexInfo({ name: "PK_USERS", columns: ["User_ID", "Tenant_ID"], is_unique: true }), indexInfo({ columns: ["user_id"] })], ["user_id", "tenant_id"]);
+
+    expect(map.get(columnIndexNameKey("USER_ID"))).toBe("primary");
+    expect(map.get(columnIndexNameKey("tenant_id"))).toBe("primary");
+  });
+
+  it("keeps the highest-priority kind with case-insensitive names", () => {
+    const map = buildColumnIndexMap([indexInfo({ columns: ["Email"] }), indexInfo({ name: "uq_email", columns: ["email"], is_unique: true })]);
+    expect(map.get(columnIndexNameKey("EMAIL"))).toBe("unique");
+  });
+});
+
+describe("column index metadata request guard", () => {
+  it("includes the full table identity and rejects stale responses", () => {
+    const users = columnIndexTableIdentity({
+      connectionId: "c1",
+      database: "db",
+      schema: "public",
+      tableName: "users",
+    })!;
+    const orders = columnIndexTableIdentity({
+      connectionId: "c1",
+      database: "db",
+      schema: "public",
+      tableName: "orders",
+    })!;
+
+    expect(users).not.toBe(orders);
+    expect(
+      columnIndexMetadataRequestCurrent({
+        requestGeneration: 2,
+        currentGeneration: 2,
+        requestIdentity: users,
+        currentIdentity: users,
+      }),
+    ).toBe(true);
+    expect(
+      columnIndexMetadataRequestCurrent({
+        requestGeneration: 2,
+        currentGeneration: 3,
+        requestIdentity: users,
+        currentIdentity: users,
+      }),
+    ).toBe(false);
+    expect(
+      columnIndexMetadataRequestCurrent({
+        requestGeneration: 2,
+        currentGeneration: 2,
+        requestIdentity: users,
+        currentIdentity: orders,
+      }),
+    ).toBe(false);
+  });
+});
diff --git a/apps/desktop/src/lib/dataGrid/dataGridColumnIndexIcon.ts b/apps/desktop/src/lib/dataGrid/dataGridColumnIndexIcon.ts
new file mode 100644
index 0000000000..e88e21046e
--- /dev/null
+++ b/apps/desktop/src/lib/dataGrid/dataGridColumnIndexIcon.ts
@@ -0,0 +1,65 @@
+import type { IndexInfo } from "@/types/database";
+
+/** 列的索引类型分类 */
+export type ColumnIndexKind = "primary" | "unique" | "index" | "none";
+
+export function columnIndexNameKey(name: string): string {
+  return name.trim().toLowerCase();
+}
+
+/** 从主键和索引列表构建规范化列名 → 最高优先级索引类型的映射 */
+export function buildColumnIndexMap(indexes: IndexInfo[], primaryKeyColumns: readonly string[] = []): Map<string, ColumnIndexKind> {
+  const map = new Map<string, ColumnIndexKind>();
+  for (const column of primaryKeyColumns) {
+    const key = columnIndexNameKey(column);
+    if (key) map.set(key, "primary");
+  }
+  for (const idx of indexes) {
+    const kind: ColumnIndexKind = idx.is_primary ? "primary" : idx.is_unique ? "unique" : "index";
+    for (const col of idx.columns) {
+      const key = columnIndexNameKey(col);
+      if (!key) continue;
+      const existing = map.get(key);
+      if (!existing || columnIndexPriority(kind) > columnIndexPriority(existing)) {
+        map.set(key, kind);
+      }
+    }
+  }
+  return map;
+}
+
+export function columnIndexTableIdentity(options: { connectionId?: string; database?: string; catalog?: string; schema?: string; tableName?: string }): string | undefined {
+  if (!options.connectionId || !options.tableName) return undefined;
+  return JSON.stringify([options.connectionId, options.database ?? "", options.catalog ?? "", options.schema ?? "", options.tableName]);
+}
+
+export function columnIndexMetadataRequestCurrent(options: { requestGeneration: number; currentGeneration: number; requestIdentity: string; currentIdentity?: string }): boolean {
+  return options.requestGeneration === options.currentGeneration && options.requestIdentity === options.currentIdentity;
+}
+
+function columnIndexPriority(kind: ColumnIndexKind): number {
+  switch (kind) {
+    case "primary":
+      return 3;
+    case "unique":
+      return 2;
+    case "index":
+      return 1;
+    default:
+      return 0;
+  }
+}
+
+/** 索引类型对应的颜色类名（橙色=主键，红色=唯一，绿色=普通） */
+export function columnIndexColorClass(kind: ColumnIndexKind): string {
+  switch (kind) {
+    case "primary":
+      return "text-orange-500";
+    case "unique":
+      return "text-red-500";
+    case "index":
+      return "text-green-500";
+    default:
+      return "";
+  }
+}
diff --git a/apps/desktop/src/lib/settings/editorSettingsDraft.ts b/apps/desktop/src/lib/settings/editorSettingsDraft.ts
index 1d277bd8fe..4d36d203a8 100644
--- a/apps/desktop/src/lib/settings/editorSettingsDraft.ts
+++ b/apps/desktop/src/lib/settings/editorSettingsDraft.ts
@@ -28,6 +28,7 @@ export const EDITOR_SETTINGS_DRAFT_KEYS = [
   "tabLayout",
   "showColumnCommentsInHeader",
   "showColumnTypesInHeader",
+  "showIndexIndicatorsInHeader",
   "compactColumnHeaderActions",
   "dataGridQuickEntry",
   "dataGridAutoTransposeSingleRow",
diff --git a/apps/desktop/src/lib/settings/settingsSearch.ts b/apps/desktop/src/lib/settings/settingsSearch.ts
index 174cc046e4..f771324842 100644
--- a/apps/desktop/src/lib/settings/settingsSearch.ts
+++ b/apps/desktop/src/lib/settings/settingsSearch.ts
@@ -168,6 +168,7 @@ export const SETTINGS_SEARCH_DEFINITIONS: readonly SettingsSearchDefinition[] =
   { id: "data-page-size", category: "data", titleKey: "settings.tableOpenPageSize", descriptionKey: "settings.tableOpenPageSizeDescription", targetId: "data" },
   { id: "appearance-header-comments", category: "appearance", titleKey: "settings.showColumnCommentsInHeader", descriptionKey: "settings.showColumnCommentsInHeaderDescription", targetId: "appearance" },
   { id: "appearance-header-types", category: "appearance", titleKey: "settings.showColumnTypesInHeader", descriptionKey: "settings.showColumnTypesInHeaderDescription", targetId: "appearance" },
+  { id: "appearance-index-indicators", category: "appearance", titleKey: "settings.showIndexIndicatorsInHeader", descriptionKey: "settings.showIndexIndicatorsInHeaderDescription", targetId: "appearance" },
   { id: "appearance-compact-header-actions", category: "appearance", titleKey: "settings.compactColumnHeaderActions", descriptionKey: "settings.compactColumnHeaderActionsDescription", targetId: "appearance" },
   { id: "appearance-auto-total", category: "appearance", titleKey: "settings.autoCalculateTotalRows", descriptionKey: "settings.autoCalculateTotalRowsDescription", targetId: "appearance" },
   { id: "appearance-infinite-scroll", category: "appearance", titleKey: "settings.infiniteScroll", descriptionKey: "settings.infiniteScrollDescription", targetId: "appearance" },
diff --git a/apps/desktop/src/stores/settingsStore.ts b/apps/desktop/src/stores/settingsStore.ts
index 85fd53ecc8..b1234b2a1e 100644
--- a/apps/desktop/src/stores/settingsStore.ts
+++ b/apps/desktop/src/stores/settingsStore.ts
@@ -469,6 +469,7 @@ export interface EditorSettings {
   mongoViewMode: "document" | "table";
   showColumnCommentsInHeader: boolean;
   showColumnTypesInHeader: boolean;
+  showIndexIndicatorsInHeader: boolean;
   compactColumnHeaderActions: boolean;
   columnWidthDensity: ColumnWidthDensity;
   dataGridQuickEntry: boolean;
@@ -647,6 +648,7 @@ export const DEFAULT_EDITOR_SETTINGS: EditorSettings = {
   mongoViewMode: "document",
   showColumnCommentsInHeader: true,
   showColumnTypesInHeader: true,
+  showIndexIndicatorsInHeader: true,
   compactColumnHeaderActions: true,
   columnWidthDensity: "standard",
   dataGridQuickEntry: false,
@@ -956,6 +958,7 @@ export function normalizeEditorSettings(settings: Partial<EditorSettings>, exist
     mongoViewMode: settings.mongoViewMode === "table" ? "table" : DEFAULT_EDITOR_SETTINGS.mongoViewMode,
     showColumnCommentsInHeader: settings.showColumnCommentsInHeader ?? DEFAULT_EDITOR_SETTINGS.showColumnCommentsInHeader,
     showColumnTypesInHeader: settings.showColumnTypesInHeader ?? DEFAULT_EDITOR_SETTINGS.showColumnTypesInHeader,
+    showIndexIndicatorsInHeader: settings.showIndexIndicatorsInHeader ?? DEFAULT_EDITOR_SETTINGS.showIndexIndicatorsInHeader,
     compactColumnHeaderActions: settings.compactColumnHeaderActions ?? DEFAULT_EDITOR_SETTINGS.compactColumnHeaderActions,
     columnWidthDensity: normalizeColumnWidthDensity(settings.columnWidthDensity),
     dataGridQuickEntry: settings.dataGridQuickEntry ?? DEFAULT_EDITOR_SETTINGS.dataGridQuickEntry,
@@ -1449,6 +1452,7 @@ export const useSettingsStore = defineStore("settings", () => {
     if (partial.mongoViewMode !== undefined) editorSettings.value.mongoViewMode = partial.mongoViewMode;
     if (partial.showColumnCommentsInHeader !== undefined) editorSettings.value.showColumnCommentsInHeader = partial.showColumnCommentsInHeader;
     if (partial.showColumnTypesInHeader !== undefined) editorSettings.value.showColumnTypesInHeader = partial.showColumnTypesInHeader;
+    if (partial.showIndexIndicatorsInHeader !== undefined) editorSettings.value.showIndexIndicatorsInHeader = partial.showIndexIndicatorsInHeader;
     if (partial.compactColumnHeaderActions !== undefined) editorSettings.value.compactColumnHeaderActions = partial.compactColumnHeaderActions;
     if (partial.columnWidthDensity !== undefined) editorSettings.value.columnWidthDensity = normalizeColumnWidthDensity(partial.columnWidthDensity);
     if (partial.dataGridQuickEntry !== undefined) editorSettings.value.dataGridQuickEntry = partial.dataGridQuickEntry;