diff --git a/api/app/lib/controllers/project/bind.js b/api/app/lib/controllers/project/bind.js
index aad724c..a3f71fe 100644
--- a/api/app/lib/controllers/project/bind.js
+++ b/api/app/lib/controllers/project/bind.js
@@ -14,15 +14,15 @@ async function bindAnxin2pep (ctx) {
 
       let bindId_ = bindId
       const now = moment()
-
+     
       let storageData = {
          name, pepProjectId, anxinProjectId,
          updateTime: now, mappingClass,
          del: false,
-         maintenanceEnd:maintenancePeriod&&maintenancePeriod.length?maintenancePeriod[1]:NULL,
-         maintenanceStart:maintenancePeriod&&maintenancePeriod.length?maintenancePeriod[0]:NULL
+         maintenanceEnd:maintenancePeriod&&maintenancePeriod.length?maintenancePeriod[1]:null,
+         maintenanceStart:maintenancePeriod&&maintenancePeriod.length?maintenancePeriod[0]:null,
       }
-
+     
       // 仅限已有 pepProjectId 的项目
       const existRes = pepProjectId ? await models.ProjectCorrelation.findOne({
          where: Object.assign(