diff --git a/src/useEscKeyDown.ts b/src/useEscKeyDown.ts
index 31b2cb9..fc99020 100644
--- a/src/useEscKeyDown.ts
+++ b/src/useEscKeyDown.ts
@@ -1,42 +1,93 @@
+import { useEvent } from '@rc-component/util';
+import useId from '@rc-component/util/lib/hooks/useId';
 import { useEffect, useMemo } from 'react';
 import { type EscCallback } from './Portal';
-import useId from '@rc-component/util/lib/hooks/useId';
-import { useEvent } from '@rc-component/util';
 
-export let stack: string[] = []; // export for testing
+let stack: { id: string; onEsc?: EscCallback }[] = [];
+
+const IME_LOCK_DURATION = 200;
+let lastCompositionEndTime = 0;
+
+// Export for testing
+export const _test =
+  process.env.NODE_ENV === 'test'
+    ? () => ({
+        stack,
+        reset: () => {
+          // Not reset stack to ensure effect will clean up correctly
+          lastCompositionEndTime = 0;
+        },
+      })
+    : null;
+
+// Global event handlers
+const onGlobalKeyDown = (event: KeyboardEvent) => {
+  if (event.key === 'Escape' && !event.isComposing) {
+    const now = Date.now();
+    if (now - lastCompositionEndTime < IME_LOCK_DURATION) {
+      return;
+    }
+
+    const len = stack.length;
+    for (let i = len - 1; i >= 0; i -= 1) {
+      stack[i].onEsc({
+        top: i === len - 1,
+        event,
+      });
+    }
+  }
+};
+
+const onGlobalCompositionEnd = () => {
+  lastCompositionEndTime = Date.now();
+};
+
+function attachGlobalEventListeners() {
+  window.addEventListener('keydown', onGlobalKeyDown);
+  window.addEventListener('compositionend', onGlobalCompositionEnd);
+}
+
+function detachGlobalEventListeners() {
+  if (stack.length === 0) {
+    window.removeEventListener('keydown', onGlobalKeyDown);
+    window.removeEventListener('compositionend', onGlobalCompositionEnd);
+  }
+}
 
 export default function useEscKeyDown(open: boolean, onEsc?: EscCallback) {
   const id = useId();
 
-  const handleEscKeyDown = useEvent((event: KeyboardEvent) => {
-    if (event.key === 'Escape' && !event.isComposing) {
-      const top = stack[stack.length - 1] === id;
-      onEsc?.({ top, event });
+  const onEventEsc = useEvent(onEsc);
+
+  const ensure = () => {
+    if (!stack.find(item => item.id === id)) {
+      stack.push({ id, onEsc: onEventEsc });
     }
-  });
+  };
+
+  const clear = () => {
+    stack = stack.filter(item => item.id !== id);
+  };
 
   useMemo(() => {
-    if (open && !stack.includes(id)) {
-      stack.push(id);
+    if (open) {
+      ensure();
     } else if (!open) {
-      stack = stack.filter(item => item !== id);
+      clear();
     }
-  }, [open, id]);
+  }, [open]);
 
   useEffect(() => {
-    if (open && !stack.includes(id)) {
-      stack.push(id);
-    }
+    if (open) {
+      ensure();
+      // Attach global event listeners
+      attachGlobalEventListeners();
 
-    if (!open) {
-      return;
+      return () => {
+        clear();
+        // Remove global event listeners if instances is empty
+        detachGlobalEventListeners();
+      };
     }
-
-    window.addEventListener('keydown', handleEscKeyDown);
-
-    return () => {
-      stack = stack.filter(item => item !== id);
-      window.removeEventListener('keydown', handleEscKeyDown);
-    };
-  }, [open, id]);
+  }, [open]);
 }
diff --git a/tests/index.test.tsx b/tests/index.test.tsx
index db50b20..bc2b3a0 100644
--- a/tests/index.test.tsx
+++ b/tests/index.test.tsx
@@ -1,7 +1,7 @@
-import { render, fireEvent } from '@testing-library/react';
+import { fireEvent, render } from '@testing-library/react';
 import React from 'react';
 import Portal from '../src';
-import { stack } from '../src/useEscKeyDown';
+import { _test } from '../src/useEscKeyDown';
 
 global.isOverflow = true;
 
@@ -298,6 +298,16 @@ describe('Portal', () => {
   });
 
   describe('onEsc', () => {
+    beforeEach(() => {
+      _test().reset();
+      jest.useFakeTimers();
+    });
+
+    afterEach(() => {
+      jest.clearAllTimers();
+      jest.useRealTimers();
+    });
+
     it('only last opened portal is top', () => {
       const onEscA = jest.fn();
       const onEscB = jest.fn();
@@ -370,6 +380,31 @@ describe('Portal', () => {
       expect(onEsc).not.toHaveBeenCalled();
     });
 
+    it('should not trigger onEsc within IME lock duration after compositionend', () => {
+      const onEsc = jest.fn();
+
+      render(
+        <Portal open onEsc={onEsc}>
+          <input type="text" />
+        </Portal>,
+      );
+
+      fireEvent.compositionEnd(window);
+
+      fireEvent.keyDown(window, { key: 'Escape' });
+      expect(onEsc).not.toHaveBeenCalled();
+
+      jest.advanceTimersByTime(100);
+      fireEvent.keyDown(window, { key: 'Escape' });
+      expect(onEsc).not.toHaveBeenCalled();
+
+      jest.advanceTimersByTime(150);
+      fireEvent.keyDown(window, { key: 'Escape' });
+      expect(onEsc).toHaveBeenCalledWith(
+        expect.objectContaining({ top: true }),
+      );
+    });
+
     it('should clear stack when unmount', () => {
       const { unmount } = render(
         <Portal open>
@@ -377,28 +412,30 @@ describe('Portal', () => {
         </Portal>,
       );
 
-      expect(stack).toHaveLength(1);
+      expect(_test().stack).toHaveLength(1);
       unmount();
-      expect(stack).toHaveLength(0);
+      expect(_test().stack).toHaveLength(0);
     });
 
     it('onEsc should treat first mounted portal as top in StrictMode', () => {
       const onEsc = jest.fn();
-    
+
       const Demo = ({ visible }: { visible: boolean }) =>
         visible ? (
           <Portal open onEsc={onEsc}>
             <div />
           </Portal>
         ) : null;
-    
+
       render(<Demo visible />, { wrapper: React.StrictMode });
-    
-      expect(stack).toHaveLength(1);
-    
+
+      expect(_test().stack).toHaveLength(1);
+
       fireEvent.keyDown(window, { key: 'Escape' });
-    
-      expect(onEsc).toHaveBeenCalledWith(expect.objectContaining({ top: true }));
+
+      expect(onEsc).toHaveBeenCalledWith(
+        expect.objectContaining({ top: true }),
+      );
     });
 
     it('nested portals should trigger in correct order', () => {
@@ -415,15 +452,20 @@ describe('Portal', () => {
               <div />
             </Portal>
           </Portal>
-        </Portal>
+        </Portal>,
       );
 
       fireEvent.keyDown(window, { key: 'Escape' });
 
-      expect(onEsc).toHaveBeenCalledWith(expect.objectContaining({ top: false }));
-      expect(onEsc2).toHaveBeenCalledWith(expect.objectContaining({ top: false }));
-      expect(onEsc3).toHaveBeenCalledWith(expect.objectContaining({ top: true }));
+      expect(onEsc).toHaveBeenCalledWith(
+        expect.objectContaining({ top: false }),
+      );
+      expect(onEsc2).toHaveBeenCalledWith(
+        expect.objectContaining({ top: false }),
+      );
+      expect(onEsc3).toHaveBeenCalledWith(
+        expect.objectContaining({ top: true }),
+      );
     });
-    
   });
 });