diff --git a/core.go b/core.go
index a94998a..415525d 100644
--- a/core.go
+++ b/core.go
@@ -21,6 +21,14 @@ import (
 //
 // Date : 16:50 2023/8/11
 func NewTimeWheel(slotCount int, interval time.Duration) *TimeWheel {
+	if slotCount <= 0 {
+		// 默认100个槽位
+		slotCount = 100
+	}
+	if interval.Seconds() == 0 {
+		// 默认60s扫描一次
+		interval = time.Second * 60
+	}
 	tw := &TimeWheel{
 		Interval:          interval,
 		Slots:             make([]*list.List, slotCount),