diff --git a/utils/ssh_client.py b/utils/ssh_client.py
index a3156bc..e1144be 100644
--- a/utils/ssh_client.py
+++ b/utils/ssh_client.py
@@ -15,12 +15,12 @@ class SSHConnection(object):
         self._transport = None
         self._sftp = None
         self._client = None
-        self._connect()  # 建立连接
 
-    def _connect(self):
+    def __enter__(self):
         transport = paramiko.Transport((self._host, self._port))
         transport.connect(username=self._username, password=self._password)
         self._transport = transport
+        return self
 
     def download(self, remote_path, local_path):
         if self._sftp is None:
@@ -46,8 +46,12 @@ class SSHConnection(object):
             return err_data
         return code
 
-    def close(self):
+    def __exit__(self, exc_type, exc_val, exc_tb):
         if self._transport:
             self._transport.close()
         if self._client:
             self._client.close()
+
+
+with SSHConnection("47.96.135.132", 22, "root", "Qyw1994@520") as ssh:
+    ssh.exec_command("ls -l")