diff --git a/nt_install.sh b/nt_install.sh
index 5fc7822..ab03dae 100644
--- a/nt_install.sh
+++ b/nt_install.sh
@@ -15,7 +15,43 @@ function red(){
 checkRootPermit() {
     [[ $EUID -ne 0 ]] && red "请使用sudo/root权限运行本脚本" && exit 1
 }
-
+ask_if()
+{
+    local choice=""
+    while [ "$choice" != "y" ] && [ "$choice" != "n" ]
+    do
+        echo -e "${Info} $1"
+        read choice
+    done
+    [ $choice == y ] && return 0
+    return 1
+}
+#检查脚本更新
+check_script_update()
+{
+    [ "$(md5sum "${BASH_SOURCE[0]}" | awk '{print $1}')" == "$(md5sum <(curl -sL "https://github.com/xgadget-lab/nexttrace/raw/main/nt_install.sh") | awk '{print $1}')" ] && return 1 || return 0
+}
+#更新脚本
+update_script()
+{
+    if curl -sL -o "${BASH_SOURCE[0]}" "https://github.com/xgadget-lab/nexttrace/raw/main/nt_install.sh" || curl -sL -o "${BASH_SOURCE[0]}" "https://github.com/xgadget-lab/nexttrace/raw/main/nt_install.sh"; then
+        echo -e "${Info} 脚本更新完成，正在重启脚本..."
+        exec bash ${BASH_SOURCE[0]}
+    else
+        echo -e "${Info} 更新脚本失败！"
+        exit 1
+    fi
+}
+ask_update_script()
+{
+    if check_script_update; then
+        echo -e "${Info} 脚本可升级"
+        [[ $auto == True ]] && update_script
+        ask_if "是否升级脚本？(y/n)" && update_script
+    else
+        echo -e "${Info} 脚本已经是最新版本"
+    fi
+}
 checkSystemArch() {
     arch=$(uname -m)
     case $arch in
@@ -217,6 +253,7 @@ addCronTask() {
 
 # Check Procedure
 checkRootPermit
+ask_update_script
 checkSystemDistribution
 checkSystemArch
 checkPackageManger