diff --git a/sender_ui.py b/sender_ui.py
index c50a6ed..fbdbcb7 100644
--- a/sender_ui.py
+++ b/sender_ui.py
@@ -71,7 +71,7 @@ class Ui_MainWindow(object):
         self.retranslateUi(MainWindow)
         self.choose_button.clicked.connect(self.choose_file) # type: ignore
         self.enbutton.clicked.connect(self.encrypt) # type: ignore
-        self.envelope_button.clicked.connect(self.send) # type: ignore
+        self.envelope_button.clicked.connect(self.thread_create) # type: ignore
         QtCore.QMetaObject.connectSlotsByName(MainWindow)
         #新增属性
         """     
@@ -207,16 +207,21 @@ class Ui_MainWindow(object):
         print(self.envelope)
         self.textBrowser.append("pack successfully")
     def send(self):
-        #发送数据
-        byte_stream=io.BytesIO()
-        pickle.dump(self.envelope,byte_stream)
-        byte_data=byte_stream.getvalue()
-        self.sender.send(b"123")
+        # 发送数据
+        self.socketvalue,addr = self.sender.accept()
+        while True:
+            envelope = json.dumps(self.envelope)
+            self.socketvalue.sendall(envelope.encode('utf-8'))
+
+    def thread_create(self):
+        self.send_data = threading.Thread(target=self.send)
+        self.send_data.start()
 
 if __name__ == "__main__":
-    #连接接收端 准备发送数据
+    # 发送方建立连接 等待接收方连接
     sender_conn = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-    sender_conn.connect(('localhost', 8888))
+    sender_conn.bind(('localhost', 8888))
+    sender_conn.listen(5)
     #创建窗口
     app = QtWidgets.QApplication(sys.argv)
     MainWindow = QtWidgets.QMainWindow()