diff --git a/cattools.sh b/cattools.sh
index 1c82a95..3ced007 100644
--- a/cattools.sh
+++ b/cattools.sh
@@ -30,6 +30,23 @@ else
   exit 1
 fi
 
+update
+
+update(){
+    if ! curl -fsSL https://service.miaoer.xyz/cattools/cattools.sh -o $(readlink -f "$0"); then
+        echo "无法连接更新站点"
+        
+        if ! curl -fsSL https://raw.githubusercontent.com/miaoermua/service/main/cattools/cattools.sh -o $(readlink -f "$0"); then
+            echo "无法连接更新仓库" 
+            echo "无法连接互联网,请联系作者."
+            return 
+        fi
+        
+    fi
+    
+    exec $(readlink -f "$0")
+}
+
 setip(){
     read -p "请输入 IP(默认为 $default_ip): " input_ip
     if [ -z $input_ip ]; then