diff --git a/apps/desktop/src/components/sidebar/SidebarTreeRuntimeHost.vue b/apps/desktop/src/components/sidebar/SidebarTreeRuntimeHost.vue
index 4d7ce6833a..a61dbd7bfe 100644
--- a/apps/desktop/src/components/sidebar/SidebarTreeRuntimeHost.vue
+++ b/apps/desktop/src/components/sidebar/SidebarTreeRuntimeHost.vue
@@ -425,6 +425,9 @@ const {
   disconnectConnection,
   connectionDisconnectMenuLabel,
   canDisconnectConnection,
+  connectionGroupDisconnectMenuLabel,
+  canDisconnectConnectionGroup,
+  disconnectConnectionGroup,
   canForgetSessionCredential,
   disconnectAndForgetConnectionPassword,
   cancelConnectionAttempt,
@@ -4963,6 +4966,12 @@ function buildConnectionSidebarMenu(context: SidebarMenuFactoryContext): boolean
     items.push({ label: "", separator: true });
     items.push({ label: t("toolbar.newConnection"), action: newConnectionInGroup, icon: Plus });
     items.push({ label: t("connectionGroup.newGroup"), action: newSubgroup, icon: FolderPlus });
+    items.push({
+      label: connectionGroupDisconnectMenuLabel(),
+      action: disconnectConnectionGroup,
+      icon: Unplug,
+      disabled: !canDisconnectConnectionGroup(),
+    });
     items.push({ label: "", separator: true });
     items.push({
       label: t("connectionGroup.renameGroup"),
diff --git a/apps/desktop/src/composables/__tests__/useSidebarConnectionMutationRuntime.selection.spec.ts b/apps/desktop/src/composables/__tests__/useSidebarConnectionMutationRuntime.selection.spec.ts
index 29204c129d..1bc524e377 100644
--- a/apps/desktop/src/composables/__tests__/useSidebarConnectionMutationRuntime.selection.spec.ts
+++ b/apps/desktop/src/composables/__tests__/useSidebarConnectionMutationRuntime.selection.spec.ts
@@ -67,6 +67,7 @@ function connectionStore(selectedTreeNodeIds: string[]) {
     connectedIds: new Set<string>(),
     connectingIds: new Set<string>(),
     disconnect: vi.fn().mockResolvedValue(undefined),
+    disconnectAndForgetConnectionPassword: vi.fn().mockResolvedValue(undefined),
     isTreeNodeChildrenLoaded: vi.fn(() => false),
     getConfig: vi.fn(() => undefined),
     isDefaultDatabase: vi.fn(() => false),
@@ -244,6 +245,60 @@ describe("sidebar connection group deletion selection", () => {
   });
 });
 
+describe("sidebar connection group disconnect", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+    sidebarFormTarget.value = null;
+  });
+
+  it("recursively disconnects only connected connections under a collapsed group", async () => {
+    const group = connectionGroupNode("group-parent");
+    group.isExpanded = false;
+    const store = connectionStore([group.id]);
+    store.connectionIdsInGroups.mockReturnValue(["conn-1", "conn-2", "conn-3"]);
+    store.connectedIds = new Set(["conn-1", "conn-3"]);
+    const { canDisconnectConnectionGroup, connectionGroupDisconnectMenuLabel, disconnectConnectionGroup } = runtime(group, store);
+
+    expect(canDisconnectConnectionGroup()).toBe(true);
+    expect(connectionGroupDisconnectMenuLabel()).toBe('connectionGroup.closeConnections:{"count":2}');
+    await disconnectConnectionGroup();
+
+    expect(store.connectionIdsInGroups).toHaveBeenCalledWith(["group-parent"]);
+    expect(store.disconnect.mock.calls).toEqual([["conn-1"], ["conn-3"]]);
+    expect(store.removeConnections).not.toHaveBeenCalled();
+    expect(store.deleteConnectionGroups).not.toHaveBeenCalled();
+    expect(store.disconnectAndForgetConnectionPassword).not.toHaveBeenCalled();
+  });
+
+  it("disables and safely no-ops when the group has no connected connections", async () => {
+    const group = connectionGroupNode("group-parent");
+    const store = connectionStore([group.id]);
+    store.connectionIdsInGroups.mockReturnValue(["conn-1", "conn-2"]);
+    const { canDisconnectConnectionGroup, connectionGroupDisconnectMenuLabel, disconnectConnectionGroup } = runtime(group, store);
+
+    expect(canDisconnectConnectionGroup()).toBe(false);
+    expect(connectionGroupDisconnectMenuLabel()).toBe('connectionGroup.closeConnections:{"count":0}');
+    await disconnectConnectionGroup();
+
+    expect(store.disconnect).not.toHaveBeenCalled();
+    expect(mocks.toast).not.toHaveBeenCalled();
+  });
+
+  it("continues group disconnects after one connection fails", async () => {
+    const group = connectionGroupNode("group-parent");
+    const store = connectionStore([group.id]);
+    store.connectionIdsInGroups.mockReturnValue(["conn-1", "conn-2"]);
+    store.connectedIds = new Set(["conn-1", "conn-2"]);
+    store.disconnect.mockRejectedValueOnce(new Error("failed")).mockResolvedValueOnce(undefined);
+    const { disconnectConnectionGroup } = runtime(group, store);
+
+    await disconnectConnectionGroup();
+
+    expect(store.disconnect.mock.calls).toEqual([["conn-1"], ["conn-2"]]);
+    expect(mocks.toast).toHaveBeenCalledWith('connection.disconnectSelectedPartial:{"succeeded":1,"failed":1}', 5000);
+  });
+});
+
 describe("sidebar connection disconnect selection", () => {
   beforeEach(() => {
     vi.clearAllMocks();
diff --git a/apps/desktop/src/composables/useSidebarConnectionMutationRuntime.ts b/apps/desktop/src/composables/useSidebarConnectionMutationRuntime.ts
index 35b184a329..4ee14a1fba 100644
--- a/apps/desktop/src/composables/useSidebarConnectionMutationRuntime.ts
+++ b/apps/desktop/src/composables/useSidebarConnectionMutationRuntime.ts
@@ -212,16 +212,12 @@ export function useSidebarConnectionMutationRuntime(options: SidebarConnectionMu
     }
   }
 
-  async function disconnectConnection() {
-    const targets = selectedConnectionDisconnectTargets(activeNode.value, selectedTreeNodesInVisibleOrder()).filter((target) => connectionStore.connectedIds.has(target.connectionId));
-    if (!targets.length) return;
+  async function disconnectConnectionIds(connectionIds: readonly string[]) {
+    if (!connectionIds.length) return;
 
-    const result = await disconnectSidebarConnections(
-      targets.map((target) => target.connectionId),
-      (connectionId) => connectionStore.disconnect(connectionId),
-    );
+    const result = await disconnectSidebarConnections(connectionIds, (connectionId) => connectionStore.disconnect(connectionId));
     if (!result.failed) {
-      toast(targets.length > 1 ? t("connection.disconnectedSelected", { count: targets.length }) : t("connection.disconnected"), 2000);
+      toast(connectionIds.length > 1 ? t("connection.disconnectedSelected", { count: connectionIds.length }) : t("connection.disconnected"), 2000);
       return;
     }
     if (result.succeeded > 0) {
@@ -232,6 +228,13 @@ export function useSidebarConnectionMutationRuntime(options: SidebarConnectionMu
     toast(t("connection.saveFailed", { message }), 5000);
   }
 
+  async function disconnectConnection() {
+    const connectionIds = selectedConnectionDisconnectTargets(activeNode.value, selectedTreeNodesInVisibleOrder())
+      .filter((target) => connectionStore.connectedIds.has(target.connectionId))
+      .map((target) => target.connectionId);
+    await disconnectConnectionIds(connectionIds);
+  }
+
   function connectionDisconnectTargets() {
     return selectedConnectionDisconnectTargets(activeNode.value, selectedTreeNodesInVisibleOrder());
   }
@@ -246,6 +249,24 @@ export function useSidebarConnectionMutationRuntime(options: SidebarConnectionMu
     return connectionDisconnectTargets().some((target) => connectionStore.connectedIds.has(target.connectionId));
   }
 
+  function connectionGroupDisconnectTargets(): string[] {
+    const node = activeNode.value;
+    if (node.type !== "connection-group") return [];
+    return connectionStore.connectionIdsInGroups([node.id]).filter((connectionId) => connectionStore.connectedIds.has(connectionId));
+  }
+
+  function connectionGroupDisconnectMenuLabel(): string {
+    return t("connectionGroup.closeConnections", { count: connectionGroupDisconnectTargets().length });
+  }
+
+  function canDisconnectConnectionGroup(): boolean {
+    return connectionGroupDisconnectTargets().length > 0;
+  }
+
+  async function disconnectConnectionGroup() {
+    await disconnectConnectionIds(connectionGroupDisconnectTargets());
+  }
+
   /** "断开并忘记本次密码"是否可用：save_password=false 且当前已连接（本次运行期必已输入密码）。 */
   function canForgetSessionCredential(): boolean {
     const node = activeNode.value;
@@ -426,6 +447,9 @@ export function useSidebarConnectionMutationRuntime(options: SidebarConnectionMu
     disconnectConnection,
     connectionDisconnectMenuLabel,
     canDisconnectConnection,
+    connectionGroupDisconnectMenuLabel,
+    canDisconnectConnectionGroup,
+    disconnectConnectionGroup,
     canForgetSessionCredential,
     disconnectAndForgetConnectionPassword,
     cancelConnectionAttempt,
diff --git a/apps/desktop/src/i18n/locales/en.ts b/apps/desktop/src/i18n/locales/en.ts
index 3f8fa81d46..6c9d26f385 100644
--- a/apps/desktop/src/i18n/locales/en.ts
+++ b/apps/desktop/src/i18n/locales/en.ts
@@ -2324,6 +2324,7 @@ export default {
     selectedConnections: "Selected {count}",
     exitMultiSelect: "Exit selection",
     renameGroup: "Rename Group",
+    closeConnections: "Close Connections in Group ({count})",
     deleteGroup: "Delete Group",
     deleteSelectedGroups: "Delete {count} Selected Groups",
     moveToGroup: "Move to Group",
diff --git a/apps/desktop/src/i18n/locales/es.ts b/apps/desktop/src/i18n/locales/es.ts
index bb5526f9bd..8c9fef979a 100644
--- a/apps/desktop/src/i18n/locales/es.ts
+++ b/apps/desktop/src/i18n/locales/es.ts
@@ -2253,6 +2253,7 @@ export default withEnglishFallback({
     createGroup: "Nuevo grupo",
     groupNamePlaceholder: "Nombre del grupo",
     renameGroup: "Renombrar grupo",
+    closeConnections: "Cerrar conexiones del grupo ({count})",
     deleteGroup: "Eliminar grupo",
     deleteSelectedGroups: "Eliminar {count} grupos seleccionados",
     moveToGroup: "Mover al grupo",
diff --git a/apps/desktop/src/i18n/locales/it.ts b/apps/desktop/src/i18n/locales/it.ts
index ed485640f9..c9bc7aee53 100644
--- a/apps/desktop/src/i18n/locales/it.ts
+++ b/apps/desktop/src/i18n/locales/it.ts
@@ -2251,6 +2251,7 @@ export default withEnglishFallback({
     createGroup: "Nuovo Gruppo",
     groupNamePlaceholder: "Nome gruppo",
     renameGroup: "Rinomina Gruppo",
+    closeConnections: "Chiudi le connessioni del gruppo ({count})",
     deleteGroup: "Elimina Gruppo",
     deleteSelectedGroups: "Elimina {count} gruppi selezionati",
     moveToGroup: "Sposta nel Gruppo",
diff --git a/apps/desktop/src/i18n/locales/ja.ts b/apps/desktop/src/i18n/locales/ja.ts
index 22651830b1..59f1d937a4 100644
--- a/apps/desktop/src/i18n/locales/ja.ts
+++ b/apps/desktop/src/i18n/locales/ja.ts
@@ -2278,6 +2278,7 @@ export default withEnglishFallback({
     createGroup: "新しいグループ",
     groupNamePlaceholder: "グループ名",
     renameGroup: "グループ名を変更",
+    closeConnections: "グループ内の接続を閉じる（{count}）",
     deleteGroup: "グループを削除",
     deleteSelectedGroups: "選択した {count} 個のグループを削除",
     moveToGroup: "グループに移動",
diff --git a/apps/desktop/src/i18n/locales/ko.ts b/apps/desktop/src/i18n/locales/ko.ts
index 769d509c39..31f85d5d06 100644
--- a/apps/desktop/src/i18n/locales/ko.ts
+++ b/apps/desktop/src/i18n/locales/ko.ts
@@ -2158,6 +2158,7 @@ export default withEnglishFallback({
     selectedConnections: "{count}개 선택",
     exitMultiSelect: "선택 종료",
     renameGroup: "그룹 이름 변경",
+    closeConnections: "그룹 내 연결 {count}개 닫기",
     deleteGroup: "그룹 삭제",
     deleteSelectedGroups: "선택한 그룹 {count}개 삭제",
     moveToGroup: "그룹으로 이동",
diff --git a/apps/desktop/src/i18n/locales/pt-BR.ts b/apps/desktop/src/i18n/locales/pt-BR.ts
index 6d2a3787bb..03a676672c 100644
--- a/apps/desktop/src/i18n/locales/pt-BR.ts
+++ b/apps/desktop/src/i18n/locales/pt-BR.ts
@@ -2253,6 +2253,7 @@ export default withEnglishFallback({
     createGroup: "Novo Grupo",
     groupNamePlaceholder: "Nome do grupo",
     renameGroup: "Renomear Grupo",
+    closeConnections: "Fechar conexões do grupo ({count})",
     deleteGroup: "Excluir Grupo",
     deleteSelectedGroups: "Excluir {count} grupos selecionados",
     moveToGroup: "Mover para Grupo",
diff --git a/apps/desktop/src/i18n/locales/zh-CN.ts b/apps/desktop/src/i18n/locales/zh-CN.ts
index fb80af0b86..397e0cc087 100644
--- a/apps/desktop/src/i18n/locales/zh-CN.ts
+++ b/apps/desktop/src/i18n/locales/zh-CN.ts
@@ -2248,6 +2248,7 @@ export default withEnglishFallback({
     selectedConnections: "已选 {count}",
     exitMultiSelect: "退出多选",
     renameGroup: "重命名分组",
+    closeConnections: "关闭分组内连接（{count}）",
     deleteGroup: "删除分组",
     deleteSelectedGroups: "删除选中的 {count} 个分组",
     moveToGroup: "移至分组",
diff --git a/apps/desktop/src/i18n/locales/zh-TW.ts b/apps/desktop/src/i18n/locales/zh-TW.ts
index 0fc0813d5f..1c43cd0274 100644
--- a/apps/desktop/src/i18n/locales/zh-TW.ts
+++ b/apps/desktop/src/i18n/locales/zh-TW.ts
@@ -2252,6 +2252,7 @@ export default withEnglishFallback({
     createGroup: "建立群組",
     groupNamePlaceholder: "群組名稱",
     renameGroup: "重新命名群組",
+    closeConnections: "關閉群組內連線（{count}）",
     deleteGroup: "刪除群組",
     deleteSelectedGroups: "刪除選取的 {count} 個群組",
     moveToGroup: "移至群組",