diff --git a/logic/service/player/Monster.go b/logic/service/player/Monster.go
index acdf63a56..8d00210a7 100644
--- a/logic/service/player/Monster.go
+++ b/logic/service/player/Monster.go
@@ -79,7 +79,7 @@ func (p *Player) GenMonster() {
 
 				if len(v.RefreshID) == 1 { //说明这里只固定刷一个，概率变尼尔尼奥,不是稀有精灵
 
-					nieo, _, _ := p.Roll(1, 25)
+					nieo := grand.Meet(20, 1000)
 					if nieo {
 						p.Data[i].Ext = 77
 						if grand.Meet(1, 2) {
@@ -87,7 +87,7 @@ func (p *Player) GenMonster() {
 						}
 
 						p.Data[i].Lv = 16
-						 
+
 						p.Data[i].IsCapture = handleNPCFightSpecial(p.Data[i].Ext) //解除捕捉限制
 					}