diff --git a/apps/backend/src/db/migrations/113_cost_center_query_indexes.sql b/apps/backend/src/db/migrations/113_cost_center_query_indexes.sql
index ed5bf6d1..ac125931 100644
--- a/apps/backend/src/db/migrations/113_cost_center_query_indexes.sql
+++ b/apps/backend/src/db/migrations/113_cost_center_query_indexes.sql
@@ -17,3 +17,9 @@ COMMENT ON INDEX idx_order_items_unmapped_mode IS
   '成本中心总览：按履约方式统计未归一订单项，避免全表扫 order_items';
 COMMENT ON INDEX idx_fulfillment_tasks_affiliate_recent IS
   '自动发货任务 30 天聚合：只索引 affiliate_dash，减少商品列表聚合扫描';
+
+-- 新索引建好后立刻更新统计信息，避免参数化查询在旧统计下继续选全表扫描。
+ANALYZE order_items;
+ANALYZE product_catalog;
+ANALYZE cost_exceptions;
+ANALYZE fulfillment_tasks;