diff --git a/RMxxx_rgmii_toolkit.sh b/RMxxx_rgmii_toolkit.sh
index 3c96f15..710181a 100644
--- a/RMxxx_rgmii_toolkit.sh
+++ b/RMxxx_rgmii_toolkit.sh
@@ -436,34 +436,26 @@ WantedBy=multi-user.target" > "$cfun_service_path"
 
 # Function to change hostname
 change_hostname() {
-    # 显示当前主机名
-    current_hostname=$(cat /etc/hostname)
-    echo -e "\e[1;32mCurrent hostname: $current_hostname\e[0m"
-    
-    # 提示用户输入新主机名
-    echo -e "\e[1;32mEnter new hostname (or 'exit' to cancel):\e[0m"
-    read new_hostname
-    
-    if [ "$new_hostname" = "exit" ]; then
-        echo -e "\e[1;31mHostname change cancelled.\e[0m"
-        return
+    # Check if simpleadmin is installed and change_hostname.sh exists
+    if [ -f "/usrdata/simpleadmin/console/menu/change_hostname.sh" ]; then
+        /usrdata/simpleadmin/console/menu/change_hostname.sh
+        new_hostname=$(cat /etc/hostname)
+        echo -e "\e[1;32mHostname has been changed to: $new_hostname\e[0m"
+        echo -e "\e[1;33mPlease reboot the device for the change to take full effect.\e[0m"
+    else
+        # If script doesn't exist, download it from the project
+        echo -e "\e[1;32mDownloading hostname change script...\e[0m"
+        remount_rw
+        mkdir -p /tmp/hostname_change
+        curl -o /tmp/hostname_change/change_hostname.sh "$GITROOT/simpleadmin/console/menu/change_hostname.sh"
+        chmod +x /tmp/hostname_change/change_hostname.sh
+        /tmp/hostname_change/change_hostname.sh
+        new_hostname=$(cat /etc/hostname)
+        echo -e "\e[1;32mHostname has been changed to: $new_hostname\e[0m"
+        echo -e "\e[1;33mPlease reboot the device for the change to take full effect.\e[0m"
+        rm -rf /tmp/hostname_change
+        remount_ro
     fi
-    
-    # 验证主机名格式
-    if ! echo "$new_hostname" | grep -qE '^[a-zA-Z0-9-]+$'; then
-        echo -e "\e[1;31mInvalid hostname. Hostname can only contain letters, numbers, and hyphens.\e[0m"
-        return
-    fi
-    
-    # 修改主机名
-    remount_rw
-    echo "$new_hostname" > /etc/hostname
-    sed -i "s/127.0.1.1.*$/127.0.1.1\t$new_hostname/g" /etc/hosts
-    hostname "$new_hostname"
-    remount_ro
-    
-    echo -e "\e[1;32mHostname has been changed to: $new_hostname\e[0m"
-    echo -e "\e[1;33mPlease reboot the device for the change to take full effect.\e[0m"
 }
 
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