diff --git a/pmapi/src/main/java/com/ningdatech/pmapi/gov/convert/ProjectConvert.java b/pmapi/src/main/java/com/ningdatech/pmapi/gov/convert/ProjectConvert.java
index ed47b27..dcffffd 100644
--- a/pmapi/src/main/java/com/ningdatech/pmapi/gov/convert/ProjectConvert.java
+++ b/pmapi/src/main/java/com/ningdatech/pmapi/gov/convert/ProjectConvert.java
@@ -395,7 +395,8 @@ public class ProjectConvert {
         req.setBaseResearchReportFile(StringUtils.isNotBlank(apply.getBaseResearchReportFilePdf()) ? apply.getBaseResearchReportFilePdf() :
                 apply.getBaseResearchReportFile());
         req.setBaseProjConsClass(apply.getBaseProjConsClass());
-        req.setBaseProjDuration(apply.getBaseProjDuration() + BizProjectContant.ProjectCollection.MONTH);
+        req.setBaseProjDuration((StringUtils.isNotBlank(apply.getBaseProjDuration()) ? apply.getBaseProjDuration() : "0")
+                + BizProjectContant.ProjectCollection.MONTH);
         req.setBaseProjIntro(apply.getBaseProjIntro());
         req.setBaseProjStartTime(ProjectCollectionUtil.convertLocalDateTime(apply.getBaseProjStartTime()));
         req.setBaseProjEndTime(ProjectCollectionUtil.convertLocalDateTime(apply.getBaseProjEndTime()));