diff --git a/buildpackage/src/main/java/com/hzya/frame/plugin/lets/plugin/base/SupplierPluginInitializer.java b/buildpackage/src/main/java/com/hzya/frame/plugin/lets/plugin/base/SupplierPluginInitializer.java
index 08692cb9..5fe8779b 100644
--- a/buildpackage/src/main/java/com/hzya/frame/plugin/lets/plugin/base/SupplierPluginInitializer.java
+++ b/buildpackage/src/main/java/com/hzya/frame/plugin/lets/plugin/base/SupplierPluginInitializer.java
@@ -299,17 +299,21 @@ public class SupplierPluginInitializer extends PluginBaseEntity {
                     def1 = String.join(",", def1_new);
                 }else {
                     String def1_old = bdCubasdocEntity.getDef1();
-                    String[] def1_split_old = def1_old.split(",");
-                    // 将数组转换为列表
-                    List<String> def1_all=new ArrayList<>();
-                    List<String> def1_list_old = Arrays.asList(def1_split_old);//u8c里已有的def1
-                    def1_all.addAll(def1_list_old);
-                    for (String s_new : def1_new) {
-                        if (!def1_list_old.contains(s_new)) {
-                            def1_all.add(s_new);
+                    if(def1_old==null){
+                        def1 = String.join(",", def1_new);
+                    }else {
+                        String[] def1_split_old = def1_old.split(",");
+                        // 将数组转换为列表
+                        List<String> def1_all = new ArrayList<>();
+                        List<String> def1_list_old = Arrays.asList(def1_split_old);//u8c里已有的def1
+                        def1_all.addAll(def1_list_old);
+                        for (String s_new : def1_new) {
+                            if (!def1_list_old.contains(s_new)) {
+                                def1_all.add(s_new);
+                            }
                         }
+                        def1 = String.join(",", def1_all);
                     }
-                    def1 = String.join(",", def1_all);
                 }