diff --git a/tyr-server/src/main/java/cn/axzo/tyr/server/service/impl/SaasFeatureApplyDetailServiceImpl.java b/tyr-server/src/main/java/cn/axzo/tyr/server/service/impl/SaasFeatureApplyDetailServiceImpl.java
index 0f0d4a9c..cdb38c87 100644
--- a/tyr-server/src/main/java/cn/axzo/tyr/server/service/impl/SaasFeatureApplyDetailServiceImpl.java
+++ b/tyr-server/src/main/java/cn/axzo/tyr/server/service/impl/SaasFeatureApplyDetailServiceImpl.java
@@ -85,8 +85,9 @@ public class SaasFeatureApplyDetailServiceImpl implements SaasFeatureApplyDetail
     @Transactional(rollbackFor = Exception.class)
     public void updateApplyDetail(PermissionPointApplyDetailUpdateReq req) {
         SaasFeatureApplyDetail detail = BeanMapper.copyBean(req, SaasFeatureApplyDetail.class, (p, s) -> {
-            s.setFitOuTypeBit(JSON.toJSONString(p.getFitOuTypeList()));
-            s.setFitOuNodeTypeBit(JSON.toJSONString(p.getFitOuNodeTypeList()));
+            s.setFitOuTypeBit(p.getFitOuTypeList() == null ? "" : JSON.toJSONString(p.getFitOuTypeList()));
+            s.setFitOuNodeTypeBit(
+                    p.getFitOuNodeTypeList() == null ? "" : JSON.toJSONString(p.getFitOuNodeTypeList()));
         });
         this.saveOrUpdate(Lists.newArrayList(detail));
     }