diff --git a/apps/desktop/src/lib/__tests__/editor/shortcutDisplay.spec.ts b/apps/desktop/src/lib/__tests__/editor/shortcutDisplay.spec.ts
index 66dcd0b37..233ccc86a 100644
--- a/apps/desktop/src/lib/__tests__/editor/shortcutDisplay.spec.ts
+++ b/apps/desktop/src/lib/__tests__/editor/shortcutDisplay.spec.ts
@@ -24,6 +24,11 @@ describe("shortcut display", () => {
     expect(formatShortcutDisplay("Shift+Alt+W", "Win32")).toBe("Shift + Alt + W");
   });
 
+  it("formats the close tab shortcut by platform", () => {
+    expect(formatShortcutDisplay("Mod+W", "MacIntel")).toBe("⌘ W");
+    expect(formatShortcutDisplay("Mod+W", "Win32")).toBe("Ctrl + W");
+  });
+
   it("formats shortcut pills with platform separators", () => {
     expect(formatShortcutDisplay("Shift+Alt+ArrowUp", "Win32")).toBe("Shift + Alt + ↑");
     expect(formatShortcutDisplay("Shift+Alt+ArrowUp", "MacIntel")).toBe("⇧ ⌥ ↑");
diff --git a/apps/desktop/src/lib/__tests__/editor/shortcutRegistry.spec.ts b/apps/desktop/src/lib/__tests__/editor/shortcutRegistry.spec.ts
index 5ed294260..09f57cc2a 100644
--- a/apps/desktop/src/lib/__tests__/editor/shortcutRegistry.spec.ts
+++ b/apps/desktop/src/lib/__tests__/editor/shortcutRegistry.spec.ts
@@ -44,6 +44,15 @@ describe("shortcutRegistry editor actions", () => {
     expect(normalizeShortcutSettings({ closeOtherTabs: "Shift+Mod+O" }).closeOtherTabs).toBe("Shift+Mod+O");
   });
 
+  it("uses the platform modifier for closing tabs and migrates the legacy Meta default", () => {
+    expect(DEFAULT_SHORTCUT_SETTINGS.closeTab).toBe("Mod+W");
+    expect(formatShortcut(DEFAULT_SHORTCUT_SETTINGS.closeTab, "Win32")).toBe("Ctrl+W");
+    expect(formatShortcut(DEFAULT_SHORTCUT_SETTINGS.closeTab, "MacIntel")).toBe("Cmd+W");
+    expect(normalizeShortcutSettings({ closeTab: "Meta+W" }).closeTab).toBe("Mod+W");
+    expect(normalizeShortcutSettings({ closeTab: "Shift+Mod+W" }).closeTab).toBe("Shift+Mod+W");
+    expect(normalizeShortcutSettings({ closeTab: "" }).closeTab).toBe("");
+  });
+
   it("normalizes custom, cleared, and invalid modifier-only shortcuts", () => {
     expect(normalizeShortcutSettings({ openDataInNewTab: "Shift" }).openDataInNewTab).toBe("Shift");
     expect(normalizeShortcutSettings({ openDataInNewTab: "" }).openDataInNewTab).toBe("");
diff --git a/apps/desktop/src/lib/editor/shortcutRegistry.ts b/apps/desktop/src/lib/editor/shortcutRegistry.ts
index fbf8787fe..8bf002288 100644
--- a/apps/desktop/src/lib/editor/shortcutRegistry.ts
+++ b/apps/desktop/src/lib/editor/shortcutRegistry.ts
@@ -68,8 +68,8 @@ export type ShortcutSettings = Record<ShortcutActionId, string>;
 
 // closeOtherTabs 的平台相关默认键。Windows/Linux 不用 Alt+Mod（= Ctrl+Alt，
 // 与国际键盘 AltGr 字符输入冲突），也不用 Ctrl+Shift+W（浏览器保留的关窗键，
-// Web 形态不可拦截，closeTab 默认 Meta+W 同理）；Shift+Alt+W 无浏览器保留
-// 冲突（Firefox accesskey 同为 Alt+Shift+字母，属正常应用快捷键区）。
+// Web 形态不可拦截）；Shift+Alt+W 无浏览器保留冲突（Firefox accesskey
+// 同为 Alt+Shift+字母，属正常应用快捷键区）。
 // 已知取舍：Windows 的 Alt+Shift 布局切换只在单独按下并释放时触发，
 // Alt+Shift+字母会正常送达应用，多语言用户如遇干扰可自定义改键。
 // macOS 的 ⌥⌘W 无上述问题
@@ -78,6 +78,7 @@ export function closeOtherTabsDefaultShortcut(platform = globalThis.navigator?.p
 }
 
 const CLOSE_OTHER_TABS_PLATFORM_DEFAULTS = new Set(["Alt+Mod+W", "Shift+Alt+W"]);
+const LEGACY_CLOSE_TAB_DEFAULT = "Meta+W";
 
 export const SHORTCUT_DEFINITIONS: ShortcutDefinition[] = [
   {
@@ -222,7 +223,7 @@ export const SHORTCUT_DEFINITIONS: ShortcutDefinition[] = [
     id: "closeTab",
     labelKey: "settings.shortcutCloseTab",
     scope: "global",
-    defaultShortcut: "Meta+W",
+    defaultShortcut: "Mod+W",
   },
   {
     id: "closeOtherTabs",
@@ -416,6 +417,11 @@ export function normalizeShortcutSettings(settings?: Partial<ShortcutSettings>):
       if (definition.id === "closeOtherTabs" && CLOSE_OTHER_TABS_PLATFORM_DEFAULTS.has(configured)) {
         configured = definition.defaultShortcut;
       }
+      // Meta+W was the old macOS-only default. Treat that exact value as a
+      // legacy default so existing Windows/Linux settings adopt Ctrl+W.
+      if (definition.id === "closeTab" && configured === LEGACY_CLOSE_TAB_DEFAULT) {
+        configured = definition.defaultShortcut;
+      }
       const normalized = definition.inputKind === "modifier-only" ? normalizeModifierOnlyShortcut(configured, definition.defaultShortcut) : configured;
       return [definition.id, normalized];
     }),
diff --git a/packages/app-tests/keyboardShortcuts.test.ts b/packages/app-tests/keyboardShortcuts.test.ts
index b08a486e9..9e1b2d0b4 100644
--- a/packages/app-tests/keyboardShortcuts.test.ts
+++ b/packages/app-tests/keyboardShortcuts.test.ts
@@ -129,12 +129,10 @@ test("ignores composing input events", () => {
   assert.equal(isExecuteSqlShortcut({ key: "Enter", metaKey: true, isComposing: true }), false);
 });
 
-test("matches Cmd+W for closing query tabs", () => {
+test("matches the platform modifier for closing query tabs", () => {
   assert.equal(isCloseTabShortcut({ key: "w", metaKey: true }), true);
-});
-
-test("ignores Ctrl+W for closing query tabs", () => {
-  assert.equal(isCloseTabShortcut({ key: "w", ctrlKey: true }), false);
+  assert.equal(isCloseTabShortcut({ key: "w", ctrlKey: true }), true);
+  assert.equal(isCloseTabShortcut({ key: "w", ctrlKey: true }, { closeTab: "Meta+W" } as any), true);
 });
 
 test("matches platform shortcuts for closing other tabs", () => {