diff --git a/svc/public_platoon_relate_commission.go b/svc/public_platoon_relate_commission.go
index 8d890bc..ea37d83 100644
--- a/svc/public_platoon_relate_commission.go
+++ b/svc/public_platoon_relate_commission.go
@@ -84,7 +84,7 @@ func BatchGetPublicPlatoonRelateCommissionByOrder(engine *xorm.Engine, masterId
 		if remainder1 == 0 {
 			fatherPosition = fatherPositions[len(fatherPositions)-1]
 		} else {
-			fatherPosition = fatherPositions[len(fatherPositions)-remainder1]
+			fatherPosition = fatherPositions[remainder1-1]
 		}
 		//} else {
 		//	remainder2 := (userPublicPlatoonRelation.ReturnCommissionNum) % userPublicPlatoonSetting.SeveralRows