diff --git a/trade_day.py b/trade_day.py
new file mode 100644
index 0000000..86f5dca
--- /dev/null
+++ b/trade_day.py
@@ -0,0 +1,38 @@
+import time
+import baostock as bs
+
+def is_trade_day(date=None):
+    if date is None:
+        date = time.strftime("%Y-%m-%d", time.localtime())
+    #### 登陆系统 ####
+    lg = bs.login()
+    # 显示登陆返回信息
+    if lg.error_code != str(0):
+        print('login respond error_code:'+lg.error_code)
+        print('login respond  error_msg:'+lg.error_msg)
+        return False, False
+
+    #### 获取交易日信息 ####
+    rs = bs.query_trade_dates(start_date=date, end_date=date)
+    if rs.error_code != str(0):
+        print('query_trade_dates respond error_code:'+rs.error_code)
+        print('query_trade_dates respond  error_msg:'+rs.error_msg)
+        bs.logout()
+        return False, False
+
+    #### 打印结果集 ####
+    trade = False
+    while (rs.error_code == '0') & rs.next():
+        # 获取一条记录，将记录合并在一起
+        data_record = rs.get_row_data()
+        if data_record[0] == date:
+            trade = data_record[1] == '1'
+            break
+
+    #### 登出系统 ####
+    bs.logout()
+    return True, trade
+    
+
+# ok, trade = is_trade_day("2025-04-30")
+# print("result:{0}, trading:{1}".format(ok, trade))
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