diff --git a/main.py b/main.py
index 7e0917a..de17377 100644
--- a/main.py
+++ b/main.py
@@ -24,13 +24,11 @@ def custom_date_parser(x):
 BaseData = pd.read_excel("原数据.xlsx", sheet_name="入职信息")
 Promote = pd.read_excel("原数据.xlsx", sheet_name="职务变动") # 
 
-for index, row in BaseData.iterrows():
-    for col in ["出生年月","任职年月","原职时间","参加工作时间","入职时间", "晋档起始", "晋级起始", "日期2"]:
-        BaseData.at[index, col] = custom_date_parser(row[col])
+for col in ["出生年月","任职年月","原职时间","参加工作时间","入职时间", "晋档起始", "晋级起始", "日期2"]:
+    BaseData[col] = BaseData[col].apply(custom_date_parser)
 
-for index, row in Promote.iterrows():
-    for col in ["任职时间","工资执行时间"]:
-        Promote.at[index, col] = custom_date_parser(row[col])
+for col in ["任职时间","工资执行时间"]:
+    Promote[col] = Promote[col].apply(custom_date_parser)
 
 logging.info("人员信息加载完成")