diff --git a/choose.sh b/choose.sh
new file mode 100644
index 0000000..1471cc0
--- /dev/null
+++ b/choose.sh
@@ -0,0 +1,76 @@
+#!/bin/bash
+
+# 以下变量需要填写
+API_KEY="your_cloudflare_api_key"
+EMAIL="your_email@example.com"
+RECORD_ID="your_dns_record_id"
+ZONE_ID="your_zone_id"
+DOMAIN="your_domain.com"
+SUBDOMAIN="sub.your_domain.com"
+SCAN_PROGRAM_PATH="your_scan_program_path"
+
+# 克隆git仓库
+git clone https://git.18g.me/feiwujia/iplist || { echo "Git clone failed"; exit 1; }
+
+# 进入iplist目录
+cd iplist || { echo "Change directory failed"; exit 1; }
+
+# 创建result文件夹
+mkdir -p result || { echo "Create result folder failed"; exit 1; }
+
+# 创建use文件夹
+mkdir -p use || { echo "Create use folder failed"; exit 1; }
+
+# 计算文件的行数
+total_lines=$(cat result/*.csv | wc -l)
+
+# 遍历iplist目录中的所有txt文件
+for file in *.txt
+do
+    # 对每个txt文件执行scan_linux_amd64命令，输出结果到result文件夹中的csv文件
+    $SCAN_PROGRAM_PATH -c 2000 -t 5 -o result/result_${file%.txt}.csv $file || { echo "scan program failed"; exit 1; }
+
+    # 从csv文件中读取每一行，并显示进度
+    cat "result/result_${file%.txt}.csv" | pv -l -s $total_lines | while IFS= read -r line
+    do
+        # 将每一行分割成多个字段
+        IFS=',' read -ra fields <<< "$line"
+        # 遍历每个字段
+        for field in "${fields[@]}"
+        do
+            # 去除字段两边的空格
+            field=$(echo $field | xargs)
+            # 检查字段是否为有效的IPv4地址
+            if [[ $field =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+                # 使用curl命令测试ip地址
+                status_code=$(curl --resolve cloudflare.com:443:$field --insecure https://cloudflare.com/cdn-cgi/trace -o /dev/null -w '%{http_code}' -s)
+                # 如果状态码为200，将ip地址保存到use.txt文件中
+                if [ "$status_code" -eq 200 ]
+                then
+                    echo "IP $field is available"
+                    echo $field >> use/use.txt
+                else
+                    echo "IP $field is not available"
+                fi
+            else
+                # 如果字段不是有效的IPv4地址，跳出循环
+                break
+            fi
+        done
+    done
+done
+
+# 从use/use.txt文件中读取IP地址，并使用Cloudflare API更新DNS记录
+while IFS= read -r ip
+do
+    # 使用Cloudflare API更新DNS记录
+    curl -X PUT "https://api.cloudflare.com/client/v4/zones/${ZONE_ID}/dns_records/${RECORD_ID}" \
+    -H "X-Auth-Email: ${EMAIL}" \
+    -H "X-Auth-Key: ${API_KEY}" \
+    -H "Content-Type: application/json" \
+    --data '{"type":"A","name":"'${SUBDOMAIN}'","content":"'${ip}'","ttl":1,"proxied":false}' || { echo "curl failed"; exit 1; }
+done < use/use.txt
+
+# 删除iplist文件夹
+cd .. && rm -rf iplist || { echo "Remove iplist folder failed"; exit 1; }
+