diff --git a/model/alertrule.go b/model/alertrule.go
index ea1809a..c2ac896 100644
--- a/model/alertrule.go
+++ b/model/alertrule.go
@@ -98,6 +98,8 @@ func (r *AlertRule) Check(points [][]bool) (maxDuration int, passed bool) {
 				continue
 			}
 			if len(points) < duration {
+				// 如果采样点数量不足 则认为检查通过
+				hasPassedRule = true
 				continue
 			}
 			total, fail := 0.0, 0.0