diff --git a/choose-cn-v2.sh b/choose-cn-v2.sh
index e2ebc54..b4e250c 100644
--- a/choose-cn-v2.sh
+++ b/choose-cn-v2.sh
@@ -1,5 +1,21 @@
 #!/bin/bash
 
+# 检查并安装依赖项 jq 和 bc
+if ! command -v jq &> /dev/null
+then
+    echo "jq could not be found, installing now..."
+    sudo apt-get update && sudo apt-get install -y jq
+fi
+
+if ! command -v bc &> /dev/null
+then
+    echo "bc could not be found, installing now..."
+    sudo apt-get update && sudo apt-get install -y bc
+fi
+
+# 输出设置 crontab 的命令
+echo "To run this script every day at 3 AM, add the following line to your crontab:"
+echo "0 3 * * * /path/to/this/script.sh"
 # 测速脚本部分
 # 使用 dig 命令查询 DNS 记录并写入 ip.txt
 dig cf.youoffer.net A +short > ip.txt