diff --git a/check.py b/check.py
index 3afa9ec..a22e6e7 100644
--- a/check.py
+++ b/check.py
@@ -1,6 +1,7 @@
 import threading
 import paramiko
 import argparse
+import socket
 import json
 import time
 import os
@@ -79,15 +80,15 @@ table_icon_3 = {
 
 table_icon = table_icon_3
 
-def check_gpu_utilization(server:dict):
+def check_gpu_utilization(server:dict, timeout=2):
     # 建立SSH连接
     client = paramiko.SSHClient()
     client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
-    client.connect(server['ip'], port=server['port'], username=server['username'], password=server.get('password', None), key_filename=server.get('key_filename', None))
+    client.connect(server['ip'], port=server['port'], username=server['username'], password=server.get('password', None), key_filename=server.get('key_filename', None), timeout=timeout)
 
     # 执行命令查看显卡占用情况（这里以nvidia-smi为例）
     cmd = 'nvidia-smi --query-gpu=index,name,memory.total,memory.used,memory.free,utilization.gpu,utilization.memory,temperature.gpu --format=csv'
-    stdin, stdout, stderr = client.exec_command(cmd)
+    stdin, stdout, stderr = client.exec_command(cmd, timeout=timeout)
     output = stdout.read().decode()
     output = output.split('\n')
     start_idx = 0
@@ -493,8 +494,16 @@ def check_all(show_type='list'):
             try:
                 res = check_gpu_utilization(server_data)
                 print_res(res)
-            except:
-                print('连接出现问题.')
+            except paramiko.AuthenticationException:
+                print("Authentication failed.")
+            except paramiko.SSHException as ssh_err:
+                print(f"SSH error: {ssh_err}")
+            except socket.timeout:
+                print("Connection timed out.")
+            except Exception as e:
+                print(f"{e}")
+            # except:
+            #     print('连接出现问题.')
             print()
     elif show_type == 'table':
         pass