diff --git a/video-gen-api/app/api/v1/admin.py b/video-gen-api/app/api/v1/admin.py
index 113b9c79..9ee06f4e 100644
--- a/video-gen-api/app/api/v1/admin.py
+++ b/video-gen-api/app/api/v1/admin.py
@@ -1859,10 +1859,10 @@ async def get_stats(
     # ── 每日各模块积分消耗（按日期+模块分组）
     from sqlalchemy import Date, cast as sa_cast
     _day_expr = sa_cast(CreditRecord.created_at, Date)
-    daily_credits_rows = (await db.execute(
+    _inner = (
         select(
             _day_expr.label('date'),
-            func.coalesce(CreditRecord.source_module, 'other').label('module'),
+            CreditRecord.source_module.label('module'),
             func.coalesce(func.sum(func.abs(CreditRecord.amount)), 0).label('credits'),
         )
         .where(
@@ -1870,8 +1870,15 @@ async def get_stats(
             CreditRecord.created_at >= date_start,
             CreditRecord.created_at <= date_end,
         )
-        .group_by(_day_expr, func.coalesce(CreditRecord.source_module, 'other'))
-        .order_by(_day_expr)
+        .group_by(_day_expr, CreditRecord.source_module)
+        .subquery()
+    )
+    daily_credits_rows = (await db.execute(
+        select(
+            _inner.c.date,
+            func.coalesce(_inner.c.module, 'other').label('module'),
+            _inner.c.credits,
+        ).order_by(_inner.c.date)
     )).all()
     daily_credits_by_module = [
         DailyCreditOut(date=str(row.date), module=row.module, credits=float(row.credits or 0))