diff --git a/env.py.example b/env.py.example
index 834460d..4887eed 100644
--- a/env.py.example
+++ b/env.py.example
@@ -109,6 +109,11 @@ WEB_PORT = 8008  # 监听端口
 CDN_ENABLED = 0
 CDN_CHECK_TIME_OUT = 1 # 检测单个 cdn 是否可用超时时间
 
+# 是否使用浏览器缓存中的RAIL_EXPIRATION 和 RAIL_DEVICEID
+CACHE_RAIL_ID_ENABLED = 0
+RAIL_EXPIRATION = '' #浏览12306 网站中的Cache的RAIL_EXPIRATION 值
+RAIL_DEVICEID = '' #浏览12306 网站中的Cache的RAIL_DEVICEID 值
+
 # 查询任务
 QUERY_JOBS = [
     {
diff --git a/py12306/config.py b/py12306/config.py
index e1b203f..9944832 100644
--- a/py12306/config.py
+++ b/py12306/config.py
@@ -94,6 +94,10 @@ class Config:
     CDN_ITEM_FILE = PROJECT_DIR + 'data/cdn.txt'
     CDN_ENABLED_AVAILABLE_ITEM_FILE = QUERY_DATA_DIR + 'available.json'
 
+    CACHE_RAIL_ID_ENABLED = 0
+    RAIL_EXPIRATION = ''
+    RAIL_DEVICEID = ''
+
     # Default time out
     TIME_OUT_OF_REQUEST = 5
 
@@ -213,6 +217,10 @@ class Config:
     def is_cdn_enabled():
         return Config().CDN_ENABLED
 
+    @staticmethod
+    def is_cache_rail_id_enabled():
+        return Config().CACHE_RAIL_ID_ENABLED
+
 
 class EnvLoader:
     envs = []
diff --git a/py12306/user/job.py b/py12306/user/job.py
index 1d0f5c1..459690c 100644
--- a/py12306/user/job.py
+++ b/py12306/user/job.py
@@ -197,10 +197,16 @@ class UserJob:
                 if response.text.find('callbackFunction') >= 0:
                     result = response.text[18:-2]
                 result = json.loads(result)
-                self.session.cookies.update({
-                    'RAIL_EXPIRATION': result.get('exp'),
-                    'RAIL_DEVICEID': result.get('dfp'),
-                })
+                if not Config().is_cache_rail_id_enabled():
+                   self.session.cookies.update({
+                       'RAIL_EXPIRATION': result.get('exp'),
+                       'RAIL_DEVICEID': result.get('dfp'),
+                   })
+                else:
+                   self.session.cookies.update({
+                       'RAIL_EXPIRATION': Config().RAIL_EXPIRATION,
+                       'RAIL_DEVICEID': Config().RAIL_DEVICEID,
+                   })
             except:
                 return False