diff --git a/pkg/proxy/proxy.go b/pkg/proxy/proxy.go
index 13c1e9d..4dbd89f 100644
--- a/pkg/proxy/proxy.go
+++ b/pkg/proxy/proxy.go
@@ -78,11 +78,11 @@ func (p *ProxyPool) Update() {
 }
 
 // CronUpdate 定时更新
-func (p *ProxyPool) CronUpdate(ctx context.Context, interval time.Duration) {
-	if interval == 0 {
-		interval = time.Minute * 30
+func (p *ProxyPool) CronUpdate(ctx context.Context) {
+	if p.cfg.Interval == 0 {
+		p.cfg.Interval = time.Minute * 30
 	}
-	ticker := time.NewTicker(interval)
+	ticker := time.NewTicker(p.cfg.Interval)
 	defer ticker.Stop()
 	for {
 		select {