diff --git a/server/product/internal/logic/getpricebypidlogic.go b/server/product/internal/logic/getpricebypidlogic.go
index ea18202f..60d5381f 100644
--- a/server/product/internal/logic/getpricebypidlogic.go
+++ b/server/product/internal/logic/getpricebypidlogic.go
@@ -104,6 +104,17 @@ func (l *GetPriceByPidLogic) dealWithStepRange(stepNumSlice, stepPriceSlice []in
 	lenStepNum := len(stepNumSlice)
 	lenStepPrice := len(stepPriceSlice)
 	stepListRsp := make([]types.StepRange, 0, lenStepNum)
+	//只有一个阶梯价格
+	if lenStepPrice == 1 {
+		stepListRsp = append(stepListRsp, types.StepRange{
+			Begin: *priceInfo.MinBuyNum * (*priceInfo.EachBoxNum),
+			End:   -1,
+			Price: float64(stepPriceSlice[0]) / 100,
+		})
+		return stepListRsp
+	}
+	begin := int64(0)
+	end := int64(0)
 	for numKey, stepNum := range stepNumSlice {
 		//先取最后一个
 		tmpPrice := float64(stepPriceSlice[lenStepPrice-1]) / 100
@@ -111,23 +122,12 @@ func (l *GetPriceByPidLogic) dealWithStepRange(stepNumSlice, stepPriceSlice []in
 		if numKey < lenStepPrice {
 			tmpPrice = float64(stepPriceSlice[numKey]) / 100
 		}
-		num := int64(stepNum) * (*priceInfo.EachBoxNum)
-		begin := int64(0)
-		end := int64(0)
-		if numKey == 0 { //第一个
-			begin = *priceInfo.MinBuyNum * (*priceInfo.EachBoxNum)
-			//只有一阶价格
-			if lenStepPrice == 1 {
-				end = -1
-			} else {
-				end = num - 1
-			}
-		} else if numKey < lenStepNum-1 { //中间的
-			nextNum := int64(stepNumSlice[numKey+1]) * (*priceInfo.EachBoxNum)
-			begin = num
-			end = nextNum - 1
-		} else { //最后的
-			begin = num
+		begin = int64(stepNum) * (*priceInfo.EachBoxNum)
+		//不是最后一个
+		if numKey < lenStepNum-1 {
+			nextBegin := int64(stepNumSlice[numKey+1]) * (*priceInfo.EachBoxNum)
+			end = nextBegin - 1
+		} else {
 			end = -1
 		}
 		stepListRsp = append(stepListRsp, types.StepRange{