diff --git a/mhd-modules/mhd-system/src/main/java/com/mhd/basic/application/service/contractManage/ContractManageApplicationService.java b/mhd-modules/mhd-system/src/main/java/com/mhd/basic/application/service/contractManage/ContractManageApplicationService.java
index 6aca3f343..21498be71 100644
--- a/mhd-modules/mhd-system/src/main/java/com/mhd/basic/application/service/contractManage/ContractManageApplicationService.java
+++ b/mhd-modules/mhd-system/src/main/java/com/mhd/basic/application/service/contractManage/ContractManageApplicationService.java
@@ -154,7 +154,7 @@ public class ContractManageApplicationService {
                     Map<String, Object> reles = preSetRulesList.get(0);
                     String price = (String) reles.get("fields"+sort);
                     String billingFormula = billingRule.getBillingFormula();
-                    billingFormula.replace(chargingId, price);
+                    billingFormula = billingFormula.replace(chargingId, price);
                     //需要判断阶梯类型进行获取各计费标志的取值，拼接公式
                     List<BillingParamsDetailDTO> billingParamsEntityList = JSON.parseArray(billingParamsJson, BillingParamsDetailDTO.class);
                     //将计费参数实体分成两组，即:固定参数和条件参数
@@ -165,7 +165,7 @@ public class ContractManageApplicationService {
                             for (BillingParamsDetailDTO ladderParamsEntity : fixedParamsEntityList) {
                                 String chargingId1 = ladderParamsEntity.getChargingId();
                                 if (chargingId1 != chargingId) {
-                                    billingFormula.replace(chargingId1, subjectAndPriceReturn.getNum().toEngineeringString());
+                                    billingFormula = billingFormula.replace(chargingId1, subjectAndPriceReturn.getNum().toEngineeringString());
                                 }
                             }
                         }