diff --git a/proxy/time.go b/proxy/time.go
new file mode 100644
index 0000000..c3b52f4
--- /dev/null
+++ b/proxy/time.go
@@ -0,0 +1,94 @@
+package main
+
+import (
+	"crypto/tls"
+	"fmt"
+	"io"
+	"net/http"
+	"regexp"
+	"strconv"
+	"time"
+)
+
+// 定义过期时间
+const ExpireDate = "2025-07-31 23:59:59"
+
+// GetBeijingTimeFromTraceURLs 从trace URL获取北京时间
+func GetBeijingTimeFromTraceURLs(urls []string, timeout time.Duration) (*time.Time, error) {
+	beijingLocation, _ := time.LoadLocation("Asia/Shanghai")
+	pattern := regexp.MustCompile(`ts=(\d+)`)
+	
+	client := &http.Client{
+		Timeout: timeout,
+		Transport: &http.Transport{
+			TLSClientConfig: &tls.Config{InsecureSkipVerify: false},
+		},
+	}
+
+	for _, url := range urls {
+		resp, err := client.Get(url)
+		if err != nil {
+			continue
+		}
+
+		if resp.StatusCode != 200 {
+			resp.Body.Close()
+			continue
+		}
+
+		body, err := io.ReadAll(resp.Body)
+		resp.Body.Close()
+		if err != nil {
+			continue
+		}
+
+		match := pattern.FindStringSubmatch(string(body))
+		if len(match) < 2 {
+			continue
+		}
+
+		timestamp, err := strconv.ParseInt(match[1], 10, 64)
+		if err != nil {
+			continue
+		}
+
+		utcTime := time.Unix(timestamp, 0).UTC()
+		beijingTime := utcTime.In(beijingLocation)
+		return &beijingTime, nil
+	}
+
+	return nil, fmt.Errorf("所有时间接口请求失败")
+}
+
+// CheckExpiration 检查是否过期
+func CheckExpiration(urls []string) error {
+	beijingTime, err := GetBeijingTimeFromTraceURLs(urls, 5*time.Second)
+	if err != nil {
+		return fmt.Errorf("获取时间失败: %v", err)
+	}
+
+	beijingLocation, _ := time.LoadLocation("Asia/Shanghai")
+	expireTime, err := time.ParseInLocation("2006-01-02 15:04:05", ExpireDate, beijingLocation)
+	if err != nil {
+		return fmt.Errorf("解析过期时间失败: %v", err)
+	}
+
+	if beijingTime.After(expireTime) {
+		return fmt.Errorf("当前项目已过期")
+	}
+
+	fmt.Printf("当前北京时间: %s，未过期\n", beijingTime.Format("2006-01-02 15:04:05"))
+	return nil
+}
+
+// 调用方法
+func main() {
+	urls := []string{
+		"https://www.cloudflare.com/cdn-cgi/trace",
+		"https://www.visa.cn/cdn-cgi/trace",
+	}
+
+	if err := CheckExpiration(urls); err != nil {
+		fmt.Printf("错误: %v\n", err)
+	}
+}