diff --git a/connect.py b/connect.py
index 2731e358e..4c7989614 100755
--- a/connect.py
+++ b/connect.py
@@ -92,11 +92,20 @@ class Tty(object):
         self.remote_ip = ''
         self.login_type = login_type
         self.vim_flag = False
-        self.ps1_pattern = re.compile('\[.*@.*\][\$#]\s')
-        self.vim_pattern = re.compile(r'\Wvi[m]+\s.* | \Wfg\s.*', re.X)
+        self.ps1_pattern = re.compile('\[?.*@.*\]?[\$#]\s')
+        self.vim_pattern = re.compile(r'\W?vi[m]?\s.* | \W?fg\s.*', re.X)
         self.vim_data = ''
-        self.stream = pyte.ByteStream()
+        self.stream = None
         self.screen = None
+        self.__init_screen_stream()
+
+    def __init_screen_stream(self):
+        """
+        初始化虚拟屏幕和字符流
+        """
+        self.stream = pyte.ByteStream()
+        self.screen = pyte.Screen(80, 24)
+        self.stream.attach(self.screen)
 
     @staticmethod
     def is_output(strings):
@@ -125,30 +134,35 @@ class Tty(object):
                 result = match[-1].strip()
         return result
 
-    def deal_command(self):
+    def deal_command(self, data):
         """
         处理截获的命令
+        :param data: 要处理的命令
         :return:返回最后的处理结果
         """
         command = ''
-        # 从虚拟屏幕中获取处理后的数据
-        for line in reversed(self.screen.buffer):
-            line_data = "".join(map(operator.attrgetter("data"), line)).strip()
-            if len(line_data) > 0:
-                parser_result = self.command_parser(line_data)
-                if parser_result is not None:
-                    # 2个条件写一起会有错误的数据
-                    if len(parser_result) > 0:
-                        command = parser_result
-                else:
-                    command = line_data
-                break
-        if command != '':
-            # 判断用户输入的是否是vim 或者fg命令
-            if self.vim_pattern.search(command):
-                self.vim_flag = True
-        # 虚拟屏幕清空
-        self.screen.reset()
+        try:
+            self.stream.feed(data)
+            # 从虚拟屏幕中获取处理后的数据
+            for line in reversed(self.screen.buffer):
+                line_data = "".join(map(operator.attrgetter("data"), line)).strip()
+                if len(line_data) > 0:
+                    parser_result = self.command_parser(line_data)
+                    if parser_result is not None:
+                        # 2个条件写一起会有错误的数据
+                        if len(parser_result) > 0:
+                            command = parser_result
+                    else:
+                        command = line_data
+                    break
+            if command != '':
+                # 判断用户输入的是否是vim 或者fg命令
+                if self.vim_pattern.search(command):
+                    self.vim_flag = True
+            # 虚拟屏幕清空
+            self.screen.reset()
+        except Exception:
+            pass
         return command
 
     def get_log(self):
@@ -348,16 +362,15 @@ class SshTty(Tty):
                         # 这个是用来处理用户的复制操作
                         if input_str != x:
                             data += input_str
-                        self.stream.feed(data)
                         if self.vim_flag:
                             match = self.ps1_pattern.search(self.vim_data)
                             if match:
                                 self.vim_flag = False
-                                data = self.deal_command()[0:200]
+                                data = self.deal_command(data)[0:200]
                                 if len(data) > 0:
                                     TtyLog(log=log, datetime=datetime.datetime.now(), cmd=data).save()
                         else:
-                            data = self.deal_command()[0:200]
+                            data = self.deal_command(data)[0:200]
                             if len(data) > 0:
                                 TtyLog(log=log, datetime=datetime.datetime.now(), cmd=data).save()
                         data = ''
@@ -393,10 +406,8 @@ class SshTty(Tty):
         # 获取连接的隧道并设置窗口大小 Make a channel and set windows size
         global channel
         win_size = self.get_win_size()
-        #self.channel = channel = ssh.invoke_shell(height=win_size[0], width=win_size[1], term='xterm')
+        # self.channel = channel = ssh.invoke_shell(height=win_size[0], width=win_size[1], term='xterm')
         self.channel = channel = transport.open_session()
-        self.screen = pyte.Screen(win_size[1], win_size[0])
-        self.stream.attach(self.screen)
         channel.get_pty(term='xterm', height=win_size[0], width=win_size[1])
         channel.invoke_shell()
         try: