diff --git a/apps/ai-game-creator-shell/src/view/ui-editor/components/Inspector/Components/ImageAssetSelector.tsx b/apps/ai-game-creator-shell/src/view/ui-editor/components/Inspector/Components/ImageAssetSelector.tsx
index 0e44b2406..6ec0e1517 100644
--- a/apps/ai-game-creator-shell/src/view/ui-editor/components/Inspector/Components/ImageAssetSelector.tsx
+++ b/apps/ai-game-creator-shell/src/view/ui-editor/components/Inspector/Components/ImageAssetSelector.tsx
@@ -3,7 +3,6 @@ import { useState } from 'react';
 
 import { ThemedModal } from '../../../../../components/modal/ThemedModal';
 import type { SpriteAsset } from '../../../../../features/ui-editor/types/SpriteAsset';
-import { ComponentField } from './ComponentField';
 
 export function ImageAssetSelector({
   value,
@@ -50,7 +49,8 @@ export function ImageAssetSelector({
 
   return (
     <>
-      <ComponentField label="目标素材">
+      <div className="block text-[11px] font-semibold text-(--platform-text-soft)">
+        目标素材
         <div className="mt-1 flex items-center gap-2">
           <div
             className={`min-w-0 flex-1 truncate rounded-lg border border-(--platform-subpanel-border) bg-white/65 px-2 py-2 text-xs ${value && !selectedSprite ? 'text-red-600' : 'text-(--platform-text-strong)'}`}
@@ -67,7 +67,7 @@ export function ImageAssetSelector({
             {buttonLabel}
           </button>
         </div>
-      </ComponentField>
+      </div>
 
       <ThemedModal
         open={open}
diff --git a/apps/ai-game-creator-shell/tests/imageAssetSelector.test.tsx b/apps/ai-game-creator-shell/tests/imageAssetSelector.test.tsx
new file mode 100644
index 000000000..f87eb0342
--- /dev/null
+++ b/apps/ai-game-creator-shell/tests/imageAssetSelector.test.tsx
@@ -0,0 +1,103 @@
+/** @vitest-environment jsdom */
+import { cleanup, render, screen, within } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { afterEach, describe, expect, it, vi } from 'vitest';
+
+import { ImageAssetSelector } from '../src/view/ui-editor/components/Inspector/Components/ImageAssetSelector';
+
+const sprites = {
+  hero: {
+    asset_id: 'hero',
+    metadata: { name: '主角', asset_type: 'sprite' },
+    path: 'assets/hero.png',
+    pixel_size: [32, 32] as [number, number],
+    pixels_per_unit: 1,
+    border: { left: 0, right: 0, top: 0, bottom: 0 },
+  },
+  enemy: {
+    asset_id: 'enemy',
+    metadata: { name: '敌人', asset_type: 'sprite' },
+    path: 'assets/enemy.png',
+    pixel_size: [32, 32] as [number, number],
+    pixels_per_unit: 1,
+    border: { left: 0, right: 0, top: 0, bottom: 0 },
+  },
+};
+
+function renderSelector(
+  value: string | null = null,
+  onChange = vi.fn(),
+  previewUrls: Record<string, string> = {},
+) {
+  return render(
+    <ImageAssetSelector
+      value={value}
+      sprites={sprites}
+      previewUrls={previewUrls}
+      readOnly={false}
+      onChange={onChange}
+    />,
+  );
+}
+
+describe('ImageAssetSelector', () => {
+  afterEach(() => cleanup());
+
+  it('selects a sprite and clears the selection from the modal', async () => {
+    const user = userEvent.setup();
+    const onChange = vi.fn();
+    renderSelector(null, onChange);
+
+    await user.click(screen.getByRole('button', { name: '选择素材' }));
+    expect(screen.getByRole('dialog', { name: '选择图片素材' })).toBeTruthy();
+    await user.click(screen.getByRole('button', { name: /主角/ }));
+    expect(onChange).toHaveBeenCalledWith('hero');
+    expect(screen.queryByRole('dialog')).toBeNull();
+
+    await user.click(screen.getByRole('button', { name: '选择素材' }));
+    await user.click(screen.getByRole('button', { name: /清除选择/ }));
+    expect(onChange).toHaveBeenLastCalledWith(null);
+  });
+
+  it('shows preview images, placeholders, and invalid references', async () => {
+    const user = userEvent.setup();
+    renderSelector('missing', vi.fn(), { hero: 'data:image/png;base64,abc' });
+
+    expect(screen.getByText('素材不存在（missing）')).toBeTruthy();
+    await user.click(screen.getByRole('button', { name: '更换素材' }));
+    const dialog = screen.getByRole('dialog', { name: '选择图片素材' });
+    expect(within(dialog).getByAltText('主角')).toBeTruthy();
+    expect(within(dialog).getByText('素材不存在')).toBeTruthy();
+    expect(
+      within(dialog).getByRole('button', { name: /清除选择/ }),
+    ).toBeTruthy();
+  });
+
+  it('cannot open while read only', () => {
+    render(
+      <ImageAssetSelector
+        value="hero"
+        sprites={sprites}
+        previewUrls={{}}
+        readOnly
+        onChange={vi.fn()}
+      />,
+    );
+
+    expect(screen.getByRole('button', { name: '更换素材' })).toHaveProperty(
+      'disabled',
+      true,
+    );
+  });
+
+  it('supports keyboard activation for sprite cards', async () => {
+    const user = userEvent.setup();
+    const onChange = vi.fn();
+    renderSelector(null, onChange);
+    await user.click(screen.getByRole('button', { name: '选择素材' }));
+    const hero = screen.getByRole('button', { name: /主角/ });
+    hero.focus();
+    await user.keyboard('{Enter}');
+    expect(onChange).toHaveBeenCalledWith('hero');
+  });
+});