diff --git a/logic/service/fight/effect/501.go b/logic/service/fight/effect/501.go
index 4be9908b6..89c256e89 100644
--- a/logic/service/fight/effect/501.go
+++ b/logic/service/fight/effect/501.go
@@ -15,9 +15,9 @@ func (e *Effect501) Skill_Use_ex() bool {
 	damageDone := e.Ctx().Our.SumDamage
 
 	if damageDone.IntPart() < int64(damageThreshold) {
-		effectType := int8(e.Args()[1].IntPart()) // XX类型
+		effectType := int8(e.Args()[1].IntPart())  // XX类型
 		effectValue := int8(e.Args()[2].IntPart()) // 等级-n
-		e.Ctx().Opp.SetProp(e.Ctx().Our, effectType, effectValue)
+		e.Ctx().Opp.SetProp(e.Ctx().Our, effectType, -effectValue)
 
 	}