diff --git a/README.md b/README.md
index 537f2d4..6531243 100644
--- a/README.md
+++ b/README.md
@@ -6,12 +6,16 @@
 
 ## 使用
 
-更新时间：2024.06.24
-
-安装
+下载、安装、升级
 
 ```shell
-curl https://raw.githubusercontent.com/oneclickvirt/UnlockTests/main/ut_install.sh -sSf | sh
+curl https://raw.githubusercontent.com/oneclickvirt/UnlockTests/main/ut_install.sh -sSf | bash
+```
+
+或
+
+```
+curl https://cdn.spiritlhl.net/https://raw.githubusercontent.com/oneclickvirt/UnlockTests/main/ut_install.sh -sSf | bash
 ```
 
 以后需要使用时使用
diff --git a/ut_install.sh b/ut_install.sh
index 11bd423..57ec3c9 100644
--- a/ut_install.sh
+++ b/ut_install.sh
@@ -7,17 +7,41 @@ rm -rf ut
 os=$(uname -s)
 arch=$(uname -m)
 
+check_cdn() {
+  local o_url=$1
+  for cdn_url in "${cdn_urls[@]}"; do
+    if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+      export cdn_success_url="$cdn_url"
+      return
+    fi
+    sleep 0.5
+  done
+  export cdn_success_url=""
+}
+
+check_cdn_file() {
+  check_cdn "https://raw.githubusercontent.com/spiritLHLS/ecs/main/back/test"
+  if [ -n "$cdn_success_url" ]; then
+    echo "CDN available, using CDN"
+  else
+    echo "No CDN available, no use CDN"
+  fi
+}
+
+cdn_urls=("https://cdn0.spiritlhl.top/" "http://cdn3.spiritlhl.net/" "http://cdn1.spiritlhl.net/" "http://cdn2.spiritlhl.net/")
+check_cdn_file
+
 case $os in
   Linux)
     case $arch in
       "x86_64" | "x86" | "amd64" | "x64")
-        wget -O ut https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-linux-amd64
+        wget -O ut "${cdn_success_url}https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-linux-amd64"
         ;;
       "i386" | "i686")
-        wget -O ut https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-linux-386
+        wget -O ut "${cdn_success_url}https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-linux-386"
         ;;
       "armv7l" | "armv8" | "armv8l" | "aarch64" | "arm64")
-        wget -O ut https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-linux-arm64
+        wget -O ut "${cdn_success_url}https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-linux-arm64"
         ;;
       *)
         echo "Unsupported architecture: $arch"
@@ -28,13 +52,13 @@ case $os in
   Darwin)
     case $arch in
       "x86_64" | "x86" | "amd64" | "x64")
-        wget -O ut https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-darwin-amd64
+        wget -O ut "${cdn_success_url}https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-darwin-amd64"
         ;;
       "i386" | "i686")
-        wget -O ut https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-darwin-386
+        wget -O ut "${cdn_success_url}https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-darwin-386"
         ;;
       "armv7l" | "armv8" | "armv8l" | "aarch64" | "arm64")
-        wget -O ut https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-darwin-arm64
+        wget -O ut "${cdn_success_url}https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-darwin-arm64"
         ;;
       *)
         echo "Unsupported architecture: $arch"
@@ -45,13 +69,13 @@ case $os in
   FreeBSD)
     case $arch in
       amd64)
-        wget -O ut https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-freebsd-amd64
+        wget -O ut "${cdn_success_url}https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-freebsd-amd64"
         ;;
       "i386" | "i686")
-        wget -O ut https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-freebsd-386
+        wget -O ut "${cdn_success_url}https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-freebsd-386"
         ;;
       "armv7l" | "armv8" | "armv8l" | "aarch64" | "arm64")
-        wget -O ut https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-freebsd-arm64
+        wget -O ut "${cdn_success_url}https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-freebsd-arm64"
         ;;
       *)
         echo "Unsupported architecture: $arch"
@@ -62,13 +86,13 @@ case $os in
   OpenBSD)
     case $arch in
       amd64)
-        wget -O ut https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-openbsd-amd64
+        wget -O ut "${cdn_success_url}https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-openbsd-amd64"
         ;;
       "i386" | "i686")
-        wget -O ut https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-openbsd-386
+        wget -O ut "${cdn_success_url}https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-openbsd-386"
         ;;
       "armv7l" | "armv8" | "armv8l" | "aarch64" | "arm64")
-        wget -O ut https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-openbsd-arm64
+        wget -O ut "${cdn_success_url}https://github.com/oneclickvirt/UnlockTests/releases/download/output/ut-openbsd-arm64"
         ;;
       *)
         echo "Unsupported architecture: $arch"