diff --git a/stui.py b/stui.py
index 12b7d662a7fde9acb7fcc4282914a11e3bcf0539..f1689392a8a4a4016803f7c58fb5e08315b7e10e 100644
--- a/stui.py
+++ b/stui.py
@@ -10,13 +10,31 @@ user_input = st.text_input('输入域名http://')
 # 判断用户是否有输入，并输出一句问候语
 if user_input != '':
     st.write('正在解析：,', user_input, '......')
-    # 检测dig是否安装
+    
+
+    # 判断当前操作系统是centos还是ubuntu
+    os_check = subprocess.check_output('cat /etc/*-release | grep -i name', shell=True).decode()
+    if 'centos' in os_check.lower():
+        os_name = 'CentOS'
+    elif 'ubuntu' in os_check.lower():
+        os_name = 'Ubuntu'
+    else:
+        os_name = 'Unknown'
+
+    # 判断是否已安装dig
     try:
-        subprocess.check_output(["dig", "-v"])
+        subprocess.check_output(['which', 'dig'])
+        print('dig is already installed')
     except subprocess.CalledProcessError:
-        # 如果未安装，则安装dig
-        subprocess.call(["sudo", "apt-get", "update"])
-        subprocess.call(["sudo", "apt-get", "install", "-y", "dnsutils"])
+        print('dig is not installed')
+        # 判断操作系统，执行相应的安装命令
+        if os_name == 'CentOS':
+            subprocess.call(['sudo', 'yum', 'install', '-y', 'bind-utils'])
+        elif os_name == 'Ubuntu':
+            subprocess.call(['sudo', 'apt-get', 'install', '-y', 'dnsutils'])
+        else:
+            print('Unknown operating system')
+
 
     # 使用subprocess运行dig命令并获取输出
     result = subprocess.run(["dig", "+noall", "+answer", user_input ], capture_output=True)