diff --git a/.env.example b/.env.example
index 39781fd..e14312f 100644
--- a/.env.example
+++ b/.env.example
@@ -1,7 +1,7 @@
 # MongoDB 连接（留空则回落到本地默认，配置/历史不持久化）
 # 本地：  mongodb://127.0.0.1:27017
-# 云端 Atlas 示例（把 <PASSWORD> 换成真实密码，数据库会建在 MONGODB_DB 指定的库，不会落到 test）：
-# MONGODB_URI=mongodb://devops:<PASSWORD>@ac-eqksaup-shard-00-00.utlbkzb.mongodb.net:27017,ac-eqksaup-shard-00-01.utlbkzb.mongodb.net:27017,ac-eqksaup-shard-00-02.utlbkzb.mongodb.net:27017/?ssl=true&replicaSet=atlas-ofsrbz-shard-0&authSource=admin&appName=devops
+# 云端 Atlas 示例（把 <PASSWORD> 换成真实密码、<cluster> 换成你的集群地址，数据库会建在 MONGODB_DB 指定的库，不会落到 test）：
+# MONGODB_URI=mongodb://<user>:<PASSWORD>@<cluster>-shard-00-00.<xxxx>.mongodb.net:27017,<cluster>-shard-00-01.<xxxx>.mongodb.net:27017,<cluster>-shard-00-02.<xxxx>.mongodb.net:27017/?ssl=true&replicaSet=atlas-<xxxx>-shard-0&authSource=admin&appName=app
 MONGODB_URI=mongodb://127.0.0.1:27017
 MONGODB_DB=torrent_console
 
diff --git a/app/layouts/default.vue b/app/layouts/default.vue
index ee839b5..c1ca116 100644
--- a/app/layouts/default.vue
+++ b/app/layouts/default.vue
@@ -16,7 +16,7 @@ onMounted(() => {
 const mongoPill = computed(() => {
   if (!health.value) return { cls: '', text: 'MONGO ?' }
   return health.value.mongo.ok
-    ? { cls: 'on', text: `MONGO · ${health.value.mongo.db}` }
+    ? { cls: 'on', text: 'MONGO' }
     : { cls: 'off', text: 'MONGO 未连接' }
 })
 </script>
diff --git a/app/pages/index.vue b/app/pages/index.vue
index ff09e4e..d956ea9 100644
--- a/app/pages/index.vue
+++ b/app/pages/index.vue
@@ -153,8 +153,7 @@ function previewLink(item: TorrentView) {
     </section>
 
     <div v-if="health && !health.mongo.ok" class="note warn mt rise rise-2">
-      MongoDB 未连接，搜索记录与种子缓存不会被保存（其余功能可用）。在 .env 配置正确的 MONGODB_URI（云端实例请填真实密码）后刷新即可：
-      <span class="mono">{{ health.mongo.uri }}</span>
+      MongoDB 未连接，搜索记录与种子缓存不会被保存（其余功能可用）。在 .env 配置正确的 MONGODB_URI 后刷新即可。
     </div>
 
     <div class="tabs rise rise-2">
diff --git a/app/pages/settings.vue b/app/pages/settings.vue
index c05416c..7ad0710 100644
--- a/app/pages/settings.vue
+++ b/app/pages/settings.vue
@@ -321,7 +321,6 @@ onMounted(load)
           <dt>MongoDB</dt>
           <dd>
             <span :class="health?.mongo.ok ? 'ok' : 'err'">{{ health?.mongo.ok ? '已连接' : '未连接' }}</span>
-            <span class="mono small dim"> · {{ health?.mongo.uri }} / {{ health?.mongo.db }}</span>
             <div v-if="health?.mongo.error" class="small err mono break">{{ health.mongo.error }}</div>
           </dd>
           <dt>磁力解析</dt>
diff --git a/app/types/api.ts b/app/types/api.ts
index a161d5b..957224f 100644
--- a/app/types/api.ts
+++ b/app/types/api.ts
@@ -95,7 +95,7 @@ export interface ClientsResponse {
 export interface HealthResponse {
   ok: boolean
   time: string
-  mongo: { ok: boolean; uri: string; db: string; error: string | null }
+  mongo: { ok: boolean; error: string | null }
   webTorrent: boolean
   providers: { id: string; label: string; homepage: string }[]
   enabledProviders: string[]
diff --git a/app/utils/i18n-dict.ts b/app/utils/i18n-dict.ts
index 266f9fb..2347351 100644
--- a/app/utils/i18n-dict.ts
+++ b/app/utils/i18n-dict.ts
@@ -225,7 +225,7 @@ export const zh2en: Record<string, string> = {
   '点击关键词直接搜索': 'Click a keyword to search',
   '已写入 MongoDB': 'Saved to MongoDB',
   'MongoDB 未连接，未记录': 'MongoDB not connected, not recorded',
-  'MongoDB 未连接，搜索记录与种子缓存不会被保存（其余功能可用）。在 .env 配置正确的 MONGODB_URI（云端实例请填真实密码）后刷新即可：': 'MongoDB not connected; search history and torrent cache will not be saved (other features still work). Set a valid MONGODB_URI in .env (use the real password for cloud instances) and refresh:'
+  'MongoDB 未连接，搜索记录与种子缓存不会被保存（其余功能可用）。在 .env 配置正确的 MONGODB_URI 后刷新即可。': 'MongoDB not connected; search history and torrent cache will not be saved (other features still work). Set a valid MONGODB_URI in .env and refresh.'
 }
 
 export const en2zh: Record<string, string> = Object.fromEntries(
diff --git a/server/utils/mongo.ts b/server/utils/mongo.ts
index 9b24993..f90c27a 100644
--- a/server/utils/mongo.ts
+++ b/server/utils/mongo.ts
@@ -68,18 +68,23 @@ export async function downloadsCol(): Promise<Collection<DownloadDoc>> {
   return (await getDb()).collection<DownloadDoc>('downloads')
 }
 
-/** 供 /api/health 使用：探测 MongoDB 是否可用 */
+/** 把驱动错误里的连接串 / 主机名脱敏，避免泄露凭证与数据库地址 */
+function sanitizeMongoError(raw: string): string {
+  return raw
+    .replace(/mongodb(\+srv)?:\/\/[^\s'"]+/gi, '***')
+    .replace(/[a-z0-9.-]+\.mongodb\.net(?::\d+)?/gi, '***')
+}
+
+/** 供 /api/health 使用：探测 MongoDB 是否可用（不返回任何连接串 / 库名） */
 export async function mongoStatus() {
   try {
     const db = await getDb()
     await db.command({ ping: 1 })
-    return { ok: true, uri: mongoUri(), db: mongoDbName(), error: null as string | null }
+    return { ok: true, error: null as string | null }
   } catch (err) {
     return {
       ok: false,
-      uri: mongoUri(),
-      db: mongoDbName(),
-      error: lastError?.message || (err instanceof Error ? err.message : String(err))
+      error: sanitizeMongoError(lastError?.message || (err instanceof Error ? err.message : String(err)))
     }
   }
 }