diff --git a/video-gen-api/app/api/v1/team.py b/video-gen-api/app/api/v1/team.py
index 6bf2fe53..12e1f8fb 100644
--- a/video-gen-api/app/api/v1/team.py
+++ b/video-gen-api/app/api/v1/team.py
@@ -347,7 +347,13 @@ async def export_team_credit_records(
     # 生成 CSV（兼容 Excel 打开）
     import csv
     import io
-    from datetime import datetime
+
+    def _format_dt(val):
+        if val is None:
+            return "-"
+        if isinstance(val, datetime):
+            return val.strftime("%Y-%m-%d %H:%M:%S")
+        return str(val)
 
     output = io.StringIO()
     writer = csv.writer(output)
@@ -360,12 +366,12 @@ async def export_team_credit_records(
             item.get("amount", 0),
             item.get("balance_after", 0),
             item.get("description") or "-",
-            datetime.fromisoformat(item.get("created_at") or "-").strftime("%Y-%m-%d %H:%M:%S"),
+            _format_dt(item.get("created_at")),
         ])
 
     from starlette.responses import StreamingResponse
     output.seek(0)
-    filename = f"team_credits_{team.id}_{datetime.now().strftime('%Y%m%d_%H%M%S')}.csv"
+    filename = f"团队积分_{team.name}_{datetime.now().strftime('%Y%m%d_%H%M%S')}.csv"
     return StreamingResponse(
         iter([output.getvalue()]),
         media_type="text/csv; charset=utf-8-sig",