diff --git a/apps/web/src/components/ui/Drawer.test.tsx b/apps/web/src/components/ui/Drawer.test.tsx
new file mode 100644
index 000000000..b5888898c
--- /dev/null
+++ b/apps/web/src/components/ui/Drawer.test.tsx
@@ -0,0 +1,238 @@
+import { act, create, type ReactTestRenderer } from 'react-test-renderer';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
+vi.mock('react-i18next', () => ({
+  useTranslation: () => ({
+    t: (key: string) => key,
+  }),
+}));
+
+vi.mock('react-dom', async () => {
+  const actual = await vi.importActual<typeof import('react-dom')>('react-dom');
+  return {
+    ...actual,
+    createPortal: (children: unknown) => children,
+  };
+});
+
+vi.mock('./Drawer.module.scss', () => ({
+  default: {
+    overlay: 'overlay',
+    overlayClosing: 'overlayClosing',
+    overlayEntering: 'overlayEntering',
+    panel: 'panel',
+    panelClosing: 'panelClosing',
+    panelEntering: 'panelEntering',
+    header: 'header',
+    title: 'title',
+    closeButton: 'closeButton',
+    body: 'body',
+    footer: 'footer',
+  },
+}));
+
+vi.mock('./icons', () => ({
+  IconX: () => null,
+}));
+
+import { Drawer } from './Drawer';
+
+(globalThis as { IS_REACT_ACT_ENVIRONMENT?: boolean }).IS_REACT_ACT_ENVIRONMENT = true;
+
+const CLOSE_ANIMATION_DURATION = 280;
+
+const createPointerEvent = (
+  target: unknown,
+  currentTarget: unknown,
+  options: { button?: number; pointerId?: number } = {}
+) => ({
+  target,
+  currentTarget,
+  button: options.button ?? 0,
+  pointerId: options.pointerId ?? 1,
+});
+
+const installMinimalDom = () => {
+  const previousHTMLElement = Object.getOwnPropertyDescriptor(globalThis, 'HTMLElement');
+  const previousDocument = Object.getOwnPropertyDescriptor(globalThis, 'document');
+  const previousWindow = Object.getOwnPropertyDescriptor(globalThis, 'window');
+  const installedWindow = typeof globalThis.window === 'undefined';
+
+  const bodyStyle = { overflow: '' };
+  const htmlStyle = { overflow: '' };
+  const listeners = new Map<string, Set<EventListenerOrEventListenerObject>>();
+
+  class HTMLElementMock {}
+
+  const documentMock = {
+    body: { style: bodyStyle },
+    documentElement: { style: htmlStyle },
+    activeElement: null as unknown,
+    addEventListener: (type: string, listener: EventListenerOrEventListenerObject) => {
+      const set = listeners.get(type) ?? new Set();
+      set.add(listener);
+      listeners.set(type, set);
+    },
+    removeEventListener: (type: string, listener: EventListenerOrEventListenerObject) => {
+      listeners.get(type)?.delete(listener);
+    },
+  };
+
+  Object.defineProperty(globalThis, 'HTMLElement', {
+    configurable: true,
+    writable: true,
+    value: HTMLElementMock,
+  });
+
+  Object.defineProperty(globalThis, 'document', {
+    configurable: true,
+    writable: true,
+    value: documentMock,
+  });
+
+  if (installedWindow) {
+    Object.defineProperty(globalThis, 'window', {
+      configurable: true,
+      writable: true,
+      value: globalThis,
+    });
+  }
+
+  return () => {
+    if (previousHTMLElement) {
+      Object.defineProperty(globalThis, 'HTMLElement', previousHTMLElement);
+    } else {
+      Reflect.deleteProperty(globalThis, 'HTMLElement');
+    }
+
+    if (previousDocument) {
+      Object.defineProperty(globalThis, 'document', previousDocument);
+    } else {
+      Reflect.deleteProperty(globalThis, 'document');
+    }
+
+    if (installedWindow) {
+      if (previousWindow) {
+        Object.defineProperty(globalThis, 'window', previousWindow);
+      } else {
+        Reflect.deleteProperty(globalThis, 'window');
+      }
+    }
+  };
+};
+
+describe('Drawer overlay close guard', () => {
+  let renderer: ReactTestRenderer | undefined;
+  let restoreDom: (() => void) | undefined;
+
+  beforeEach(() => {
+    vi.useFakeTimers();
+    restoreDom = installMinimalDom();
+  });
+
+  afterEach(() => {
+    act(() => {
+      renderer?.unmount();
+    });
+    renderer = undefined;
+    restoreDom?.();
+    restoreDom = undefined;
+    vi.useRealTimers();
+  });
+
+  const mountDrawer = async (onClose: () => void) => {
+    await act(async () => {
+      renderer = create(
+        <Drawer open title="Test drawer" onClose={onClose}>
+          <input aria-label="field" />
+        </Drawer>
+      );
+    });
+
+    // open effect 通过 queueMicrotask 切换可见态
+    await act(async () => {
+      await Promise.resolve();
+    });
+
+    return renderer!;
+  };
+
+  const findOverlay = (root: ReactTestRenderer) =>
+    root.root.find((node) => String(node.props.className ?? '').includes('overlay'));
+
+  it('closes when pointer starts and ends on overlay', async () => {
+    const onClose = vi.fn();
+    const mounted = await mountDrawer(onClose);
+    const overlay = findOverlay(mounted);
+
+    await act(async () => {
+      overlay.props.onPointerDown(createPointerEvent(overlay, overlay, { pointerId: 1 }));
+      overlay.props.onPointerUp(createPointerEvent(overlay, overlay, { pointerId: 1 }));
+    });
+
+    expect(onClose).not.toHaveBeenCalled();
+
+    await act(async () => {
+      vi.advanceTimersByTime(CLOSE_ANIMATION_DURATION);
+    });
+
+    expect(onClose).toHaveBeenCalledTimes(1);
+  });
+
+  it('does not close when pointer starts inside drawer and ends on overlay', async () => {
+    const onClose = vi.fn();
+    const mounted = await mountDrawer(onClose);
+    const overlay = findOverlay(mounted);
+    const panel = mounted.root.findByProps({ role: 'dialog' });
+
+    await act(async () => {
+      // 模拟：在面板内按下，在遮罩上释放（拖选文字场景）
+      overlay.props.onPointerDown(createPointerEvent(panel, overlay, { pointerId: 1 }));
+      overlay.props.onPointerUp(createPointerEvent(overlay, overlay, { pointerId: 1 }));
+    });
+
+    await act(async () => {
+      vi.advanceTimersByTime(CLOSE_ANIMATION_DURATION);
+    });
+
+    expect(onClose).not.toHaveBeenCalled();
+  });
+
+  it('does not close when pointer starts on overlay and ends inside drawer', async () => {
+    const onClose = vi.fn();
+    const mounted = await mountDrawer(onClose);
+    const overlay = findOverlay(mounted);
+    const panel = mounted.root.findByProps({ role: 'dialog' });
+
+    await act(async () => {
+      overlay.props.onPointerDown(createPointerEvent(overlay, overlay, { pointerId: 1 }));
+      overlay.props.onPointerUp(createPointerEvent(panel, overlay, { pointerId: 1 }));
+    });
+
+    await act(async () => {
+      vi.advanceTimersByTime(CLOSE_ANIMATION_DURATION);
+    });
+
+    expect(onClose).not.toHaveBeenCalled();
+  });
+
+  it('does not close when interleaved pointers mix panel and overlay starts', async () => {
+    const onClose = vi.fn();
+    const mounted = await mountDrawer(onClose);
+    const overlay = findOverlay(mounted);
+    const panel = mounted.root.findByProps({ role: 'dialog' });
+
+    await act(async () => {
+      // 指针 1：面板内按下；指针 2：遮罩上按下；释放指针 1 在遮罩上 → 不应关闭
+      overlay.props.onPointerDown(createPointerEvent(panel, overlay, { pointerId: 1 }));
+      overlay.props.onPointerDown(createPointerEvent(overlay, overlay, { pointerId: 2 }));
+      overlay.props.onPointerUp(createPointerEvent(overlay, overlay, { pointerId: 1 }));
+    });
+
+    await act(async () => {
+      vi.advanceTimersByTime(CLOSE_ANIMATION_DURATION);
+    });
+
+    expect(onClose).not.toHaveBeenCalled();
+  });
+});
diff --git a/apps/web/src/components/ui/Drawer.tsx b/apps/web/src/components/ui/Drawer.tsx
index 796818094..1b2ae4814 100644
--- a/apps/web/src/components/ui/Drawer.tsx
+++ b/apps/web/src/components/ui/Drawer.tsx
@@ -4,6 +4,7 @@ import {
   useId,
   useRef,
   useState,
+  type PointerEvent as ReactPointerEvent,
   type PropsWithChildren,
   type ReactNode,
 } from 'react';
@@ -63,6 +64,7 @@ export function Drawer({
   const closeTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
   const panelRef = useRef<HTMLDivElement | null>(null);
   const previouslyFocusedRef = useRef<HTMLElement | null>(null);
+  const overlayPointerIdsRef = useRef<Set<number>>(new Set());
 
   const startClose = useCallback(
     (notifyParent: boolean) => {
@@ -117,6 +119,35 @@ export function Drawer({
     startClose(true);
   }, [startClose]);
 
+  // 按 pointerId 配对：仅当同一指针在遮罩上按下且在遮罩上释放时才关闭。
+  // 避免「面板内拖选到遮罩释放」与多指针交错状态互相覆盖。
+  const handleOverlayPointerDown = useCallback((event: ReactPointerEvent<HTMLDivElement>) => {
+    if (event.target === event.currentTarget && event.button === 0) {
+      overlayPointerIdsRef.current.add(event.pointerId);
+    } else {
+      overlayPointerIdsRef.current.delete(event.pointerId);
+    }
+  }, []);
+
+  const handleOverlayPointerUp = useCallback(
+    (event: ReactPointerEvent<HTMLDivElement>) => {
+      const startedOnOverlay = overlayPointerIdsRef.current.delete(event.pointerId);
+
+      if (
+        startedOnOverlay &&
+        event.target === event.currentTarget &&
+        event.button === 0
+      ) {
+        handleClose();
+      }
+    },
+    [handleClose]
+  );
+
+  const handleOverlayPointerCancel = useCallback((event: ReactPointerEvent<HTMLDivElement>) => {
+    overlayPointerIdsRef.current.delete(event.pointerId);
+  }, []);
+
   const shouldLockScroll = open || isVisible;
 
   useEffect(() => {
@@ -173,7 +204,12 @@ export function Drawer({
     .join(' ');
 
   const drawerContent = (
-    <div className={overlayClass} onClick={handleClose}>
+    <div
+      className={overlayClass}
+      onPointerDown={handleOverlayPointerDown}
+      onPointerUp={handleOverlayPointerUp}
+      onPointerCancel={handleOverlayPointerCancel}
+    >
       <div
         ref={panelRef}
         className={panelClass}