diff --git a/feishu/Application.py b/feishu/Application.py
index 58646fc..712732c 100644
--- a/feishu/Application.py
+++ b/feishu/Application.py
@@ -8,6 +8,7 @@
 """
 import time
 import urllib3
+import json
 
 from datetime import datetime
 
@@ -15,6 +16,26 @@
 from .Utils import FeishuBase, Request
 from .Decorator import tenant_access_token, app_access_token
 
+class Bitable(FeishuBase):
+    @tenant_access_token
+    def add_record(self,app_token,table_id,fields):
+        url='/bitable/v1/apps/%s/tables/%s/records'%(app_token,table_id)
+        return self.request.post(url, data=fields)
+
+    @tenant_access_token
+    def search_records(self,app_token,table_id,filter):
+        url='/bitable/v1/apps/%s/tables/%s/records?filter=%s'%(app_token,table_id,filter)
+        return self.request.get(url, data=None)
+
+    @tenant_access_token
+    def update_record(self,app_token,table_id,record_id,fields):
+        url='/bitable/v1/apps/%s/tables/%s/records/%s'%(app_token,table_id,record_id)
+        return self.request.put(url, data=fields)
+
+    @tenant_access_token
+    def tables(self,user_open_id):
+        url='/bitable/v1/apps/%s/tables'%(user_open_id)
+        return self.request.get(url, data=None)
 
 class Bot(FeishuBase):
     MESSAGE_MAP = {
@@ -38,62 +59,18 @@ class Bot(FeishuBase):
     MESSAGE_BUTTON_CONFIRM = True
     MESSAGE_NOTICE_NAME = '通知'
 
-    def __init__(self, app_id, app_secret, retry=None):
-
-        self.app_id = app_id
-        self.app_secret = app_secret
-
-        assert app_id is None or isinstance(app_id, str), app_id
-        assert app_secret is None or isinstance(app_secret, str), app_secret
-        assert (
-                retry is None
-                or isinstance(retry, int)
-                or isinstance(retry, urllib3.util.Retry)
-        )
-
-        self.request = Request(
-            retry=retry
-        )
-        # assert app_verification_token is None or isinstance(app_verification_token, str), app_verification_token
-
-    def get_tenant_access_token(self):
-        """
-        租户TOKEN
-        :return:
-        """
-        url = "/auth/v3/tenant_access_token/internal/"
-        req_body = {
-            "app_id": self.app_id,
-            "app_secret": self.app_secret
-        }
-        self.request.tenant_access_token = self.request.get(url, req_body)
-        self.request.tenant_access_token['expire'] += time.time()
-        return self.request.tenant_access_token
-
-    def get_app_access_token(self):
-        """
-        APP TOKEN
-        :return:
-        """
-        url = "/auth/v3/app_access_token/internal/"
-        req_body = {
-            "app_id": self.app_id,
-            "app_secret": self.app_secret
-        }
-        self.request.app_access_token = self.request.get(url, req_body)
-        self.request.app_access_token['expire'] += time.time()
-        return self.request.app_access_token
 
     @tenant_access_token
     def send_user_message(self, user_open_id, text=None):
         assert all([text]), 'At least one of "text" or "data" is not empty'
-        url = "/message/v4/send/"
+        url = "/im/v1/messages?receive_id_type=open_id"
+        content={
+            "text": text
+        }
         data = {
-            "open_id": user_open_id,
+            "receive_id": user_open_id,
             "msg_type": "text",
-            "content": {
-                "text": text
-            }
+            "content":json.dumps(content)
         }
         return self.request.post(url, data=data)
 
diff --git a/feishu/Utils.py b/feishu/Utils.py
index 8e016f8..9cebb7c 100644
--- a/feishu/Utils.py
+++ b/feishu/Utils.py
@@ -9,6 +9,7 @@
 import sys
 import json
 import requests
+import time
 
 from .Logs import logger
 from .FeishuException import RequestException
@@ -16,6 +17,52 @@
 
 class FeishuBase:
     retry = 3
+    def __init__(self, app_id, app_secret, retry=None):
+
+        self.app_id = app_id
+        self.app_secret = app_secret
+
+        assert app_id is None or isinstance(app_id, str), app_id
+        assert app_secret is None or isinstance(app_secret, str), app_secret
+        assert (
+                retry is None
+                or isinstance(retry, int)
+                or isinstance(retry, urllib3.util.Retry)
+        )
+
+        self.request = Request(
+            retry=retry
+        )
+        # assert app_verification_token is None or isinstance(app_verification_token, str), app_verification_token
+    
+    def get_tenant_access_token(self):
+        """
+        租户TOKEN
+        :return:
+        """
+        url = "/auth/v3/tenant_access_token/internal/"
+        req_body = {
+            "app_id": self.app_id,
+            "app_secret": self.app_secret
+        }
+        self.request.tenant_access_token = self.request.get(url, req_body)
+        self.request.tenant_access_token['expire'] += time.time()
+        return self.request.tenant_access_token
+
+    def get_app_access_token(self):
+        """
+        APP TOKEN
+        :return:
+        """
+        url = "/auth/v3/app_access_token/internal/"
+        req_body = {
+            "app_id": self.app_id,
+            "app_secret": self.app_secret
+        }
+        self.request.app_access_token = self.request.get(url, req_body)
+        self.request.app_access_token['expire'] += time.time()
+        return self.request.app_access_token
+
 
 
 class Request(FeishuBase):
@@ -43,6 +90,9 @@ def __init__(self, timeout=None, retry=None, **kwargs):
     def get(self, url, data):
         return self.response(url, data, 'get')
 
+    def put(self, url, data):
+        return self.response(url, data, 'put')
+
     def post(self, url, data=None):
         return self.response(url, data, 'post')
 
diff --git a/feishu/__init__.py b/feishu/__init__.py
index 37f1b08..53d3466 100644
--- a/feishu/__init__.py
+++ b/feishu/__init__.py
@@ -10,7 +10,7 @@
 __all__ = ('set_log_level', 'Bot')
 
 from .Logs import set_log_level
-from .Application import Bot
+from .Application import Bot,Bitable