diff --git a/src/components/image-editor/useImageCanvasAssetLibrary.test.tsx b/src/components/image-editor/useImageCanvasAssetLibrary.test.tsx
index 2888206db..3642649b6 100644
--- a/src/components/image-editor/useImageCanvasAssetLibrary.test.tsx
+++ b/src/components/image-editor/useImageCanvasAssetLibrary.test.tsx
@@ -1,6 +1,12 @@
 /* @vitest-environment jsdom */
 
-import { act, render, screen, waitFor } from '@testing-library/react';
+import {
+  act,
+  fireEvent,
+  render,
+  screen,
+  waitFor,
+} from '@testing-library/react';
 import { useRef } from 'react';
 import { beforeEach, describe, expect, it, vi } from 'vitest';
 
@@ -483,6 +489,35 @@ describe('useImageCanvasAssetLibrary', () => {
     expect(screen.getByTestId('selected-assets').textContent).toBe('');
   });
 
+  it('clears the range anchor when toggling all visible assets', async () => {
+    loadEditorAssetLibraryMock.mockResolvedValueOnce({
+      folders: [
+        {
+          folderId: 'project',
+          label: '项目素材',
+          sortOrder: 0,
+          collapsed: false,
+          systemDefault: true,
+        },
+      ],
+      assets: [
+        createAssetSnapshot({ assetId: 'asset-a', label: '素材A' }),
+        createAssetSnapshot({ assetId: 'asset-b', label: '素材B' }),
+        createAssetSnapshot({ assetId: 'asset-c', label: '素材C' }),
+      ],
+    });
+    render(<AssetLibraryHarness />);
+
+    fireEvent.click(await screen.findByRole('button', { name: '素材A' }));
+    fireEvent.click(screen.getByRole('button', { name: 'toggle all' }));
+    fireEvent.click(screen.getByRole('button', { name: 'toggle all' }));
+    fireEvent.click(screen.getByRole('button', { name: '素材C' }), {
+      shiftKey: true,
+    });
+
+    expect(screen.getByTestId('selected-assets').textContent).toBe('asset-c');
+  });
+
   it('submits a generated asset to showcase review', async () => {
     loadEditorAssetLibraryMock.mockResolvedValueOnce({
       folders: [
diff --git a/src/components/image-editor/useImageCanvasAssetLibrary.ts b/src/components/image-editor/useImageCanvasAssetLibrary.ts
index ad7db3236..63f02a52c 100644
--- a/src/components/image-editor/useImageCanvasAssetLibrary.ts
+++ b/src/components/image-editor/useImageCanvasAssetLibrary.ts
@@ -500,6 +500,7 @@ export function useImageCanvasAssetLibrary({
   );
 
   const toggleAllAssetsSelected = useCallback((visibleAssetIds: string[]) => {
+    assetSelectionAnchorRef.current = null;
     setSelectedAssetIds((currentIds) =>
       resolveVisibleAssetSelectionToggle({
         selectedAssetIds: currentIds,