diff --git a/webui/src/utils/__tests__/id-label.test.ts b/webui/src/utils/__tests__/id-label.test.ts
index 60e976a0..d196f1bb 100644
--- a/webui/src/utils/__tests__/id-label.test.ts
+++ b/webui/src/utils/__tests__/id-label.test.ts
@@ -1,10 +1,23 @@
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it, vi } from 'vitest';
 import { idLabel } from '../id-label';
 import en from '@/i18n/en.json';
 import zhCN from '@/i18n/zh-CN.json';
 
 const t = (key: string) => `t:${key}`;
 
+// 应用里 @intlify/unplugin-vue-i18n 把 i18n/*.json 的文案预编译成消息函数，
+// 这里同样把叶子换成函数，按生产环境的形态测试
+vi.mock('@/i18n/en.json', async (importOriginal) => {
+  const compile = (node: unknown): unknown =>
+    typeof node === 'string'
+      ? () => node
+      : Object.fromEntries(
+          Object.entries(node as object).map(([k, v]) => [k, compile(v)])
+        );
+  const { default: source } = await importOriginal<{ default: object }>();
+  return { default: compile(source) };
+});
+
 describe('idLabel', () => {
   it.each([
     ['config.plugins_set.point_labels', 'downloader', 'downloader'],
diff --git a/webui/src/utils/id-label.ts b/webui/src/utils/id-label.ts
index 56d4f43b..07858a67 100644
--- a/webui/src/utils/id-label.ts
+++ b/webui/src/utils/id-label.ts
@@ -17,5 +17,6 @@ export function idLabel(
       (node, part) => (node as Record<string, unknown> | undefined)?.[part],
       en
     );
-  return typeof found === 'string' ? t(key) : id;
+  // 构建时 i18n 插件把文案预编译成消息函数，测试里则是原始字符串
+  return typeof found === 'string' || typeof found === 'function' ? t(key) : id;
 }