diff --git a/install.sh b/install.sh
new file mode 100644
index 0000000..1830d6f
--- /dev/null
+++ b/install.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+# Check ROOT & OpenWrt
+if [ $(id -u) != "0" ]; then
+    echo "Error: You must be root to run this script, please use root user"
+    exit 1
+fi
+
+openwrt_release=$(cat /etc/openwrt_release)
+if ! grep -q "OpenWrt" <<< "$openwrt_release"; then
+    echo "Your system is not supported!"
+    exit 1
+fi
+
+# installed
+install_cattools() {
+    if [ ! -f /usr/bin/cattools ]; then
+        echo "cattools not found, installing..."
+        if curl --silent --connect-timeout 5 -o /usr/bin/cattools https://raw.githubusercontent.com/miaoermua/cattools/main/cattools.sh; then
+            echo "cattools installed successfully from the first URL."
+        elif curl --silent --connect-timeout 5 -o /usr/bin/cattools https://fastly.jsdelivr.net/gh/miaoermua/cattools@main/cattools.sh; then
+            echo "cattools installed successfully from the second URL."
+        else
+            echo "Failed to download cattools from both URLs."
+            exit 1
+        fi
+        chmod +x /usr/bin/cattools
+    fi
+    echo "cattools is installed successfully!"
+    echo "please type ‘cattools’ or ‘/usr/bin/cattools’ to run it."
+}