diff --git a/web/src/components/creator/WorksGallery.tsx b/web/src/components/creator/WorksGallery.tsx
index 205f70a..6685803 100644
--- a/web/src/components/creator/WorksGallery.tsx
+++ b/web/src/components/creator/WorksGallery.tsx
@@ -111,7 +111,7 @@ interface CollectionProgress {
 }
 
 interface WorksGalleryProps {
-  /** 不传则不过滤来源（如竞品分析页跨全部竞品）；监控/自有账号详情传具体账号 ID。 */
+  /** 不传则不限定账号；仍按 sourceType 限定来源类型。监控/自有账号详情传具体账号 ID。 */
   sourceId?: string;
   sourceType?: 'owned' | 'competitor';
   emptyHint?: string;
diff --git a/web/src/pages/creator/competitors/index.tsx b/web/src/pages/creator/competitors/index.tsx
index ffb19ef..2f6a58f 100644
--- a/web/src/pages/creator/competitors/index.tsx
+++ b/web/src/pages/creator/competitors/index.tsx
@@ -69,7 +69,7 @@ export default function Page() {
           />
         </Space>
       </Card>
-      <WorksGallery emptyHint="暂无符合条件的作品。" extraFilters={extraFilters} />
+      <WorksGallery sourceType="competitor" emptyHint="暂无符合条件的作品。" extraFilters={extraFilters} />
     </Flex>
   );
 }
diff --git a/web/tests/competitor-analysis-source.test.cjs b/web/tests/competitor-analysis-source.test.cjs
new file mode 100644
index 0000000..fbcd78a
--- /dev/null
+++ b/web/tests/competitor-analysis-source.test.cjs
@@ -0,0 +1,87 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+const path = require('node:path');
+const Module = require('node:module');
+const ts = require('typescript');
+
+const pagePath = path.join(__dirname, '../src/pages/creator/competitors/index.tsx');
+
+function createPage() {
+  let filters = {};
+  const gallery = 'WorksGallery';
+  const element = (type, props) => ({ type, props });
+  const mocks = {
+    react: {
+      useMemo: (factory) => factory(),
+      useState: () => [filters, (update) => { filters = update(filters); }],
+    },
+    'react/jsx-runtime': { jsx: element, jsxs: element },
+    antd: {
+      Card: 'Card', DatePicker: 'DatePicker', Flex: 'Flex', InputNumber: 'InputNumber',
+      Select: 'Select', Space: 'Space', Typography: { Text: 'Text' },
+    },
+    '@/components/creator/WorksGallery': { __esModule: true, default: gallery },
+  };
+  const compiled = ts.transpileModule(fs.readFileSync(pagePath, 'utf8'), {
+    fileName: pagePath,
+    compilerOptions: {
+      module: ts.ModuleKind.CommonJS, jsx: ts.JsxEmit.ReactJSX, esModuleInterop: true,
+      inlineSourceMap: true, inlineSources: true,
+    },
+  }).outputText;
+  const loaded = new Module(pagePath, module);
+  loaded.filename = pagePath;
+  loaded.paths = Module._nodeModulePaths(path.dirname(pagePath));
+  loaded.require = (name) => Object.hasOwn(mocks, name) ? mocks[name] : module.require(name);
+  loaded._compile(compiled, pagePath);
+
+  function descendants(node) {
+    if (!node || typeof node !== 'object') return [];
+    return [node, ...[node.props?.children].flat(Infinity).flatMap(descendants)];
+  }
+  return () => {
+    const nodes = descendants(loaded.exports.default());
+    return {
+      gallery: nodes.find((node) => node.type === gallery).props,
+      controls: nodes.filter((node) => node.props.onChange),
+    };
+  };
+}
+
+function assertCompetitorOnly(props) {
+  assert.equal(props.sourceType, 'competitor', '竞品分析必须排除自有账号作品');
+  assert.equal(props.sourceId, undefined, '竞品分析应包含所有监测账号，而非限定某个账号');
+}
+
+test('竞品分析首次加载只查询监测账号作品', () => {
+  const render = createPage();
+  assertCompetitorOnly(render().gallery);
+});
+
+test('调整及清空各项筛选后仍只查询监测账号作品', () => {
+  const render = createPage();
+  const date = { format: (pattern) => {
+    assert.equal(pattern, 'YYYY-MM-DD');
+    return '2026-05-18';
+  } };
+  const cases = [
+    ['最低点赞', 'min_likes', 12, 12],
+    ['最低评论', 'min_comments', 3, 3],
+    ['最低转发', 'min_shares', 5, 5],
+    ['全部状态', 'published_at_status', 'verified', 'verified'],
+    ['发布开始日期', 'published_after', date, '2026-05-18T00:00:00Z'],
+    ['发布结束日期', 'published_before', date, '2026-05-18T23:59:59Z'],
+  ];
+  for (const [placeholder, key, value, expected] of cases) {
+    render().controls.find((control) => control.props.placeholder === placeholder).props.onChange(value);
+    assertCompetitorOnly(render().gallery);
+    assert.equal(render().gallery.extraFilters[key], expected);
+  }
+  for (const [placeholder, key] of cases) {
+    const clearValue = key === 'published_at_status' ? undefined : null;
+    render().controls.find((control) => control.props.placeholder === placeholder).props.onChange(clearValue);
+    assertCompetitorOnly(render().gallery);
+    assert.equal(render().gallery.extraFilters[key], undefined);
+  }
+});