diff --git a/video-gen-api/app/api/v1/admin.py b/video-gen-api/app/api/v1/admin.py
index c2f37871..81acb14a 100644
--- a/video-gen-api/app/api/v1/admin.py
+++ b/video-gen-api/app/api/v1/admin.py
@@ -1948,23 +1948,43 @@ async def get_stats(
     ]
 
     # ── 各团队积分消耗（有团队 vs 无团队，使用流水中的团队快照）
+    # 消耗 = 扣除金额 - 退回金额（净消耗）
     team_credit_rows = (await db.execute(
         select(
             func.coalesce(CreditRecord.team_name_snapshot, '未分配团队').label('team_name'),
             CreditRecord.team_id_snapshot.label('team_id'),
-            func.coalesce(func.sum(func.abs(CreditRecord.amount)), 0).label('credits'),
+            func.coalesce(
+                func.sum(
+                    func.case(
+                        (CreditRecord.type == "consume", func.abs(CreditRecord.amount)),
+                        else_=0,
+                    )
+                ), 0
+            ).label("total_consume"),
+            func.coalesce(
+                func.sum(
+                    func.case(
+                        (CreditRecord.type == "refund", func.abs(CreditRecord.amount)),
+                        else_=0,
+                    )
+                ), 0
+            ).label("total_refund"),
         )
         .where(
-            CreditRecord.type == "consume",
+            CreditRecord.type.in_(["consume", "refund"]),
             real_credit_charge_filter,
             CreditRecord.created_at >= date_start,
             CreditRecord.created_at <= date_end,
         )
         .group_by(CreditRecord.team_id_snapshot, CreditRecord.team_name_snapshot)
-        .order_by(func.coalesce(func.sum(func.abs(CreditRecord.amount)), 0).desc())
+        .order_by(func.coalesce(func.sum(func.case((CreditRecord.type == "consume", func.abs(CreditRecord.amount)), else_=0)), 0).desc())
     )).all()
     credits_by_team = [
-        TeamCreditOut(team_name=row.team_name, team_id=row.team_id, credits=float(row.credits or 0))
+        TeamCreditOut(
+            team_name=row.team_name,
+            team_id=row.team_id,
+            credits=round(float(row.total_consume or 0) - float(row.total_refund or 0), 2),
+        )
         for row in team_credit_rows
     ]
 
diff --git a/video-gen-api/app/api/v1/team.py b/video-gen-api/app/api/v1/team.py
index 88cde7c2..2552fde1 100644
--- a/video-gen-api/app/api/v1/team.py
+++ b/video-gen-api/app/api/v1/team.py
@@ -379,15 +379,41 @@ async def export_team_credit_records(
         end_date=end_date,
     )
 
-    # 生成 CSV（兼容 Excel 打开）
+    # 生成 CSV（兼容 Excel 打开，UTF-8 BOM）
     import csv
     import io
+    from datetime import datetime as _dt
 
     def _format_dt(val):
         if val is None:
             return "-"
-        
-        return str(datetime.fromtimestamp(val).strftime("%Y-%m-%d %H:%M:%S"))
+        try:
+            # 情况 1：已经是 datetime
+            if isinstance(val, _dt):
+                dt = val
+            elif isinstance(val, (int, float)):
+                # 情况 2：Unix 时间戳（极少，兼容旧代码）
+                dt = _dt.fromtimestamp(val)
+            elif isinstance(val, str):
+                # 情况 3：ISO 字符串（admin_credit_record_service._iso 返回的格式）
+                s = val.strip()
+                if s.endswith("Z"):
+                    s = s[:-1] + "+00:00"
+                try:
+                    dt = _dt.fromisoformat(s)
+                except ValueError:
+                    # 兼容旧格式 YYYY-MM-DD HH:MM:SS
+                    dt = _dt.strptime(s, "%Y-%m-%d %H:%M:%S")
+            else:
+                return str(val)
+            # 统一转东八区展示
+            if getattr(dt, "tzinfo", None) is None:
+                dt = dt.replace(tzinfo=CST)
+            else:
+                dt = dt.astimezone(CST)
+            return dt.strftime("%Y-%m-%d %H:%M:%S")
+        except Exception:  # noqa: BLE001
+            return str(val) if val else "-"
 
     output = io.StringIO()
     writer = csv.writer(output)
diff --git a/video-gen-api/app/services/admin_credit_record_service.py b/video-gen-api/app/services/admin_credit_record_service.py
index 1223b7c4..a67d7ccc 100644
--- a/video-gen-api/app/services/admin_credit_record_service.py
+++ b/video-gen-api/app/services/admin_credit_record_service.py
@@ -59,7 +59,9 @@ def _as_date_start(value: str | None) -> datetime | None:
     if not value:
         return None
     try:
-        return datetime.strptime(value, "%Y-%m-%d")
+        # 构造东八区 00:00:00 与 DB timezone-aware created_at 比较，避免 8 小时偏移
+        naive = datetime.strptime(value, "%Y-%m-%d")
+        return naive.replace(tzinfo=CST)
     except Exception:
         return None
 
@@ -68,7 +70,11 @@ def _as_date_end(value: str | None) -> datetime | None:
     if not value:
         return None
     try:
-        return datetime.strptime(value, "%Y-%m-%d").replace(hour=23, minute=59, second=59, microsecond=999999)
+        # 构造东八区 23:59:59.999999
+        naive = datetime.strptime(value, "%Y-%m-%d").replace(
+            hour=23, minute=59, second=59, microsecond=999999,
+        )
+        return naive.replace(tzinfo=CST)
     except Exception:
         return None
 
@@ -250,7 +256,9 @@ async def list_admin_credit_records(
     end_date: str | None = None,
 ) -> dict[str, Any]:
     page = max(int(page or 1), 1)
-    page_size = min(max(int(page_size or 20), 1), 1000)
+    # 列表页默认最多 1000 条；导出接口可传较大值（最多 100000 条），避免月度导出被截断
+    max_page_size = 100000 if page_size is not None and int(page_size) > 1000 else 1000
+    page_size = min(max(int(page_size or 20), 1), max_page_size)
     filters = _build_filters(
         user_id=user_id,
         user_name=user_name,