diff --git a/src/db/metadata.rs b/src/db/metadata.rs
index 1628273..b789d64 100644
--- a/src/db/metadata.rs
+++ b/src/db/metadata.rs
@@ -219,18 +219,6 @@ impl Database {
         }).collect()
     }
 
-    // ── 统计 ──
-
-    pub async fn get_metadata_stats(&self) -> MetadataStats {
-        MetadataStats {
-            total_persons: sqlx::query_scalar("SELECT COUNT(*) FROM persons").fetch_one(&self.pool).await.unwrap_or(0),
-            total_aliases: sqlx::query_scalar("SELECT COUNT(*) FROM person_aliases").fetch_one(&self.pool).await.unwrap_or(0),
-            total_albums_with_person: sqlx::query_scalar("SELECT COUNT(*) FROM albums WHERE person_name_original IS NOT NULL AND person_name_original != ''").fetch_one(&self.pool).await.unwrap_or(0),
-            total_albums_without_person: sqlx::query_scalar("SELECT COUNT(*) FROM albums WHERE person_name_original IS NULL OR person_name_original = ''").fetch_one(&self.pool).await.unwrap_or(0),
-            total_tags: sqlx::query_scalar("SELECT COUNT(*) FROM album_tags").fetch_one(&self.pool).await.unwrap_or(0),
-        }
-    }
-
     // ── 写入 ──
 
     pub async fn insert_person(&self, name: &str, display_name: Option<&str>) -> i64 {
diff --git a/src/models/tag.rs b/src/models/tag.rs
index 1c103a1..9450ae3 100644
--- a/src/models/tag.rs
+++ b/src/models/tag.rs
@@ -20,8 +20,8 @@ pub struct TagListResponse {
 pub struct MetadataStats {
     pub total_persons: i64,
     pub total_aliases: i64,
-    pub total_albums_with_person: i64,
-    pub total_albums_without_person: i64,
+    pub total_albums: i64,
+    pub total_images: i64,
     pub total_tags: i64,
 }
 
diff --git a/src/routes/tag.rs b/src/routes/tag.rs
index 238fe72..158f857 100644
--- a/src/routes/tag.rs
+++ b/src/routes/tag.rs
@@ -1,14 +1,14 @@
 use crate::cache::TagCache;
-use crate::db::Database;
+use crate::search_db::SearchDb;
 use crate::models::*;
 use actix_web::{HttpResponse, Responder, web};
 use std::collections::HashMap;
 use std::sync::Arc;
 use tokio::sync::RwLock;
 
-/// GET /api/metadata/stats — 仍查 DB（需要实时统计数据）
-pub async fn get_metadata_stats(db: web::Data<Arc<Database>>) -> impl Responder {
-    HttpResponse::Ok().json(db.get_metadata_stats().await)
+/// GET /api/metadata/stats — 从 search.db 获取统计数据
+pub async fn get_metadata_stats(search_db: web::Data<Arc<SearchDb>>) -> impl Responder {
+    HttpResponse::Ok().json(search_db.get_metadata_stats().await)
 }
 
 /// GET /api/tags/search?tag=xxx — 从缓存按标签搜索相册
diff --git a/src/search_db/search.rs b/src/search_db/search.rs
index c73d075..ede5687 100644
--- a/src/search_db/search.rs
+++ b/src/search_db/search.rs
@@ -339,4 +339,30 @@ impl SearchDb {
         results.sort_by(|a, b| b.total_albums.cmp(&a.total_albums));
         results
     }
+
+    // ═══════════════════════════════════════
+    //  元数据统计
+    // ═══════════════════════════════════════
+
+    /// 获取全局统计信息
+    pub async fn get_metadata_stats(&self) -> MetadataStats {
+        let total_persons: i64 = sqlx::query_scalar("SELECT COUNT(*) FROM persons")
+            .fetch_one(&self.pool).await.unwrap_or(0);
+        let total_aliases: i64 = sqlx::query_scalar("SELECT COUNT(*) FROM person_aliases")
+            .fetch_one(&self.pool).await.unwrap_or(0);
+        let total_albums: i64 = sqlx::query_scalar("SELECT COUNT(*) FROM albums")
+            .fetch_one(&self.pool).await.unwrap_or(0);
+        let total_images: i64 = sqlx::query_scalar("SELECT COALESCE(SUM(image_count), 0) FROM albums")
+            .fetch_one(&self.pool).await.unwrap_or(0);
+        let total_tags: i64 = sqlx::query_scalar("SELECT COUNT(*) FROM album_tags")
+            .fetch_one(&self.pool).await.unwrap_or(0);
+
+        MetadataStats {
+            total_persons,
+            total_aliases,
+            total_albums,
+            total_images,
+            total_tags,
+        }
+    }
 }