diff --git a/src/pages/regulatoryRepository/enterpriseStandardPlan/index.vue b/src/pages/regulatoryRepository/enterpriseStandardPlan/index.vue
index c07a26c1b..c13e6e906 100644
--- a/src/pages/regulatoryRepository/enterpriseStandardPlan/index.vue
+++ b/src/pages/regulatoryRepository/enterpriseStandardPlan/index.vue
@@ -841,8 +841,10 @@
                             const filterList = list.filter(s => s !== 'null');
                             this.addForm.esMatingRelations = filterList.join(",");
                         }else if(val === 'null'){
-                            this.addForm.esMatingRelations = "";
+                            this.addForm.esMatingRelations = null;
                         }
+                    }else {
+                        this.addForm.esMatingRelations = null
                     }
                 }
             },