diff --git a/pmapi/src/main/java/com/ningdatech/pmapi/projectlib/manage/ProjectLibManage.java b/pmapi/src/main/java/com/ningdatech/pmapi/projectlib/manage/ProjectLibManage.java
index 441a904..7aaffc4 100644
--- a/pmapi/src/main/java/com/ningdatech/pmapi/projectlib/manage/ProjectLibManage.java
+++ b/pmapi/src/main/java/com/ningdatech/pmapi/projectlib/manage/ProjectLibManage.java
@@ -441,7 +441,7 @@ public class ProjectLibManage {
     }
 
     private BigDecimal computeAmount(BigDecimal cuurentAmount,List<ProjectRenewalFundDeclaration> prfs) {
-        BigDecimal res = cuurentAmount;
+        BigDecimal res = Objects.isNull(cuurentAmount) ? BigDecimal.ZERO : cuurentAmount;
         for(ProjectRenewalFundDeclaration prf :  prfs){
             res = res.add(prf.getAnnualPaymentAmount());
         }