diff --git a/src/main/java/com/zhgd/xmgl/modules/basicdata/service/impl/EngineeringSingleServiceImpl.java b/src/main/java/com/zhgd/xmgl/modules/basicdata/service/impl/EngineeringSingleServiceImpl.java
index 81a1bf4..1908708 100644
--- a/src/main/java/com/zhgd/xmgl/modules/basicdata/service/impl/EngineeringSingleServiceImpl.java
+++ b/src/main/java/com/zhgd/xmgl/modules/basicdata/service/impl/EngineeringSingleServiceImpl.java
@@ -60,11 +60,13 @@ public class EngineeringSingleServiceImpl extends ServiceImpl<EngineeringSingleM
             for (EngineeringMain engineeringMain : engineeringVo.getEngineeringMains()) {
                 engineeringMain.setEngineeringSn(engineeringVo.getEngineeringSn());
                 engineeringMainService.save(engineeringMain);
-                for (EngineeringMainPerson engineeringMainPerson : engineeringMain.getEngineeringMainPersonList()) {
-                    engineeringMainPerson.setMainId(engineeringMain.getId());
-                    engineeringMainPerson.setEngineeringSn(engineeringVo.getEngineeringSn());
+                if(engineeringMain.getEngineeringMainPersonList() != null) {
+                    for (EngineeringMainPerson engineeringMainPerson : engineeringMain.getEngineeringMainPersonList()) {
+                        engineeringMainPerson.setMainId(engineeringMain.getId());
+                        engineeringMainPerson.setEngineeringSn(engineeringVo.getEngineeringSn());
+                    }
+                    engineeringMainPersonService.saveBatch(engineeringMain.getEngineeringMainPersonList());
                 }
-                engineeringMainPersonService.saveBatch(engineeringMain.getEngineeringMainPersonList());
             }
         }
         return true;