diff --git a/Scripts/sh/1customCDN.sh b/Scripts/sh/1customCDN.sh
index 4a27b8a..466f433 100644
--- a/Scripts/sh/1customCDN.sh
+++ b/Scripts/sh/1customCDN.sh
@@ -33,12 +33,35 @@ else
 fi
 
 
+# 检查域名连通性
+check_url() {
+    HTTP_CODE=$(curl -o /dev/null --connect-timeout 3 -s -w "%{http_code}" $1)
+    if [ $HTTP_CODE -eq 200 ]; then
+        return 0
+    else
+        return 1
+    fi
+}
+
+
+# 获取有效 config.sh 链接
+get_valid_config(){
+    config_list=(https://raw.githubusercontents.com/Oreomeow/VIP/main/Conf/Qinglong/config.sample.sh https://raw.sevencdn.com/Oreomeow/VIP/main/Conf/Qinglong/config.sample.sh https://ghproxy.com/https://raw.githubusercontent.com/Oreomeow/VIP/main/Conf/Qinglong/config.sample.sh)
+    for url in ${config_list[@]}; do
+        check_url $url
+        if [ $? = 0 ]; then
+            valid_url=$url
+            echo "使用链接 $url"
+            break
+        fi
+    done
+}
 # 下载 config.sh
 dl_config_shell(){
     if [ ! -a "$config_shell_path" ]; then
         touch $config_shell_path
     fi
-    curl -sL --connect-timeout 3 https://raw.githubusercontents.com/Oreomeow/VIP/main/Conf/Qinglong/config.sample.sh > $config_shell_path
+    curl -sL --connect-timeout 3 $valid_url > $config_shell_path
     cp $config_shell_path $dir_config/config.sh
     # 判断是否下载成功
     config_size=$(ls -l $config_shell_path | awk '{print $5}')
@@ -48,18 +71,30 @@ dl_config_shell(){
     fi
 }
 if [ "${Rconfig}" = 'y' -o "${all}" = 1 ]; then
-    dl_config_shell
+    get_valid_config && dl_config_shell
 else
     echo "已为您跳过替换 config.sh"
 fi
 
 
+# 获取有效 extra.sh 链接
+get_valid_extra(){
+    extra_list=(https://raw.githubusercontents.com/Oreomeow/VIP/main/Tasks/qlrepo/extra.sh https://raw.sevencdn.com/Oreomeow/VIP/main/Tasks/qlrepo/extra.sh https://ghproxy.com/https://raw.githubusercontent.com/Oreomeow/VIP/main/Tasks/qlrepo/extra.sh)
+    for url in ${extra_list[@]}; do
+        check_url $url
+        if [ $? = 0 ]; then
+            valid_url=$url
+            echo "使用链接 $url"
+            break
+        fi
+    done
+}
 # 下载 extra.sh
 dl_extra_shell(){
     if [ ! -a "$extra_shell_path" ]; then
         touch $extra_shell_path
     fi
-    curl -sL --connect-timeout 3 https://raw.githubusercontents.com/Oreomeow/VIP/main/Tasks/qlrepo/extra.sh > $extra_shell_path
+    curl -sL --connect-timeout 3 $valid_url > $extra_shell_path
     cp $extra_shell_path $dir_config/extra.sh
     # 判断是否下载成功
     extra_size=$(ls -l $extra_shell_path | awk '{print $5}')
@@ -97,12 +132,12 @@ run_ql_extra(){
     sleep 5
 }
 if [ "${all}" = 1 ]; then
-    dl_extra_shell && set_default_extra && add_ql_extra && run_ql_extra
+    get_valid_extra && dl_extra_shell && set_default_extra && add_ql_extra && run_ql_extra
 elif [ "${extra}" = 'n' ]; then
     echo "已为您跳过操作 extra.sh"
 else
     if [[ ${extra} =~ 'a' ]]; then
-        dl_extra_shell
+        get_valid_extra && dl_extra_shell
     fi
     if [[ ${extra} =~ 'b' ]]; then
         set_default_extra
@@ -116,12 +151,24 @@ else
 fi
 
 
+# 获取有效 code.sh 链接
+get_valid_code(){
+    code_list=(https://raw.githubusercontents.com/Oreomeow/VIP/main/Scripts/sh/Helpcode2.8/code.sh https://raw.sevencdn.com/Oreomeow/VIP/main/Scripts/sh/Helpcode2.8/code.sh https://ghproxy.com/https://raw.githubusercontents.com/Oreomeow/VIP/main/Scripts/sh/Helpcode2.8/code.sh)
+    for url in ${code_list[@]}; do
+        check_url $url
+        if [ $? = 0 ]; then
+            valid_url=$url
+            echo "使用链接 $url"
+            break
+        fi
+    done
+}
 # 下载 code.sh
 dl_code_shell(){
     if [ ! -a "$code_shell_path" ]; then
         touch $code_shell_path
     fi
-    curl -sL --connect-timeout 3 https://raw.githubusercontents.com/Oreomeow/VIP/main/Scripts/sh/Helpcode2.8/code.sh > $code_shell_path
+    curl -sL --connect-timeout 3 $valid_url > $code_shell_path
     cp $code_shell_path $dir_config/code.sh
     # 判断是否下载成功
     code_size=$(ls -l $code_shell_path | awk '{print $5}')
@@ -154,12 +201,12 @@ add_bash_code(){
     fi
 }
 if [ "${all}" = 1 ]; then
-    dl_code_shell && set_default_code && add_bash_code
+    get_valid_code && dl_code_shell && set_default_code && add_bash_code
 elif [ "${code}" = 'n' ]; then
     echo "已为您跳过操作 code.sh"
 else
     if [[ ${code} =~ 'a' ]]; then
-        dl_code_shell
+        get_valid_code && dl_code_shell
     fi
     if [[ ${code} =~ 'b' ]]; then
         set_default_code
@@ -170,12 +217,24 @@ else
 fi
 
 
+# 获取有效 task_before.sh 链接
+get_valid_task_before(){
+    task_before_list=(https://raw.githubusercontents.com/Oreomeow/VIP/main/Scripts/sh/Helpcode2.8/task_before.sh https://raw.sevencdn.com/Oreomeow/VIP/main/Scripts/sh/Helpcode2.8/task_before.sh https://ghproxy.com/https://raw.githubusercontents.com/Oreomeow/VIP/main/Scripts/sh/Helpcode2.8/task_before.sh)
+    for url in ${task_before_list[@]}; do
+        check_url $url
+        if [ $? = 0 ]; then
+            valid_url=$url
+            echo "使用链接 $url"
+            break
+        fi
+    done
+}
 # 下载 task_before.sh
 dl_task_before_shell(){
     if [ ! -a "$task_before_shell_path" ]; then
         touch $task_before_shell_path
     fi
-    curl -sL --connect-timeout 3 https://raw.githubusercontents.com/Oreomeow/VIP/main/Scripts/sh/Helpcode2.8/task_before.sh > $task_before_shell_path
+    curl -sL --connect-timeout 3 $valid_url > $task_before_shell_path
     cp $task_before_shell_path $dir_config/task_before.sh
     # 判断是否下载成功
     task_before_size=$(ls -l $task_before_shell_path | awk '{print $5}')
@@ -185,7 +244,7 @@ dl_task_before_shell(){
     fi
 }
 if [ "${Rbefore}" = 'y' -o "${all}" = 1 ]; then
-    dl_task_before_shell
+    get_valid_task_before && dl_task_before_shell
 else
     echo "已为您跳过替换 task_before.sh"
 fi
@@ -247,17 +306,17 @@ add_curl_sample(){
     fi
 }
 run_curl_sample(){
-    curl -sL https://raw.githubusercontents.com/Oreomeow/VIP/main/Conf/Qinglong/config.sample.sh -o /ql/sample/config.sample.sh && cp -rf /ql/sample/config.sample.sh /ql/config
+    curl -sL $valid_url -o /ql/sample/config.sample.sh && cp -rf /ql/sample/config.sample.sh /ql/config
 }
 if [ "${all}" = 1 ]; then
-    add_curl_sample && run_curl_sample
+    get_valid_config && add_curl_sample && run_curl_sample
 else
     case ${sample} in
         0)  echo "已为您跳过自动更新模板"
         ;;
-        1)  add_curl_sample
+        1)  get_valid_config && add_curl_sample
         ;;
-        2)  add_curl_sample && run_curl_sample
+        2)  get_valid_config && add_curl_sample && run_curl_sample
     esac    
 fi