diff --git a/src/components/customField/AddForm.vue b/src/components/customField/AddForm.vue
index 0700e61b..39a92414 100644
--- a/src/components/customField/AddForm.vue
+++ b/src/components/customField/AddForm.vue
@@ -332,8 +332,10 @@ export default {
           }
         } else if (val === StandardGradeClassify.ONE_LEVEL.value) {
           // 选的是1级
-          // 带出3级的部门：起草部门
-          this.formInline.auth_dept = this.standardGradeClassification.find(item => item.level + '' === '3').deptIds
+          // // 带出3级的部门：起草部门
+          // this.formInline.auth_dept = this.standardGradeClassification.find(item => item.level + '' === '3').deptIds
+          // 带出主起草单位
+          this.formInline.auth_dept = this.formInline.main_drafting_unit
           // 设置可选择项
           this.departSelectRange = this.standardGradeClassification.find(item => item.level + '' === '1').deptIds.split(',')
           this.formInline = JSON.parse(JSON.stringify(this.formInline))
@@ -343,8 +345,10 @@ export default {
           }
         } else if (val === StandardGradeClassify.TWO_LEVEL.value) {
           // 选的是2级
-          // 带出3级的部门：起草部门
-          this.formInline.auth_dept = this.standardGradeClassification.find(item => item.level + '' === '3').deptIds
+          // // 带出3级的部门：起草部门
+          // this.formInline.auth_dept = this.standardGradeClassification.find(item => item.level + '' === '3').deptIds
+          // 带出主起草单位
+          this.formInline.auth_dept = this.formInline.main_drafting_unit
           // 设置可选择项
           this.departSelectRange = this.standardGradeClassification.find(item => item.level + '' === '2').deptIds.split(',')
           this.formInline = JSON.parse(JSON.stringify(this.formInline))
@@ -353,8 +357,10 @@ export default {
             this.innerDisabledField = this.innerDisabledField.filter(item => item !== 'auth_dept')
           }
         } else if (val === StandardGradeClassify.THREE_LEVEL.value) {
-          // 选的是3级，授权部门带出不可编辑
-          this.formInline.auth_dept = this.standardGradeClassification.find(item => item.level + '' === '3').deptIds
+          // // 选的是3级，授权部门带出不可编辑
+          // this.formInline.auth_dept = this.standardGradeClassification.find(item => item.level + '' === '3').deptIds
+          // 选的是3级，带出主起草单位
+          this.formInline.auth_dept = this.formInline.main_drafting_unit
           if (!this.innerDisabledField.includes('auth_dept')) {
             this.innerDisabledField.push('auth_dept')
           }
@@ -389,6 +395,21 @@ export default {
         }
       }
     },
+    // 主起草单位改变后，需要将选中的主起草单位增加到授权部门
+    'formInline.main_drafting_unit' (val) {
+      if (val) {
+        if (this.formInline.grade_classification === StandardGradeClassify.ONE_LEVEL.value ||
+          this.formInline.grade_classification === StandardGradeClassify.TWO_LEVEL.value) {
+          // 标准等级分类是1级或者2级需要，把主起草单位追加到授权部门
+          const authDeptArr = (this.formInline.auth_dept || '').split(',')
+          authDeptArr.push(val)
+          this.formInline.auth_dept = authDeptArr.join(',')
+        } else if (this.formInline.grade_classification === StandardGradeClassify.THREE_LEVEL.value) {
+          // 标准等级分类是3级，把授权部门替换成主起草单位
+          this.formInline.auth_dept = val
+        }
+      }
+    },
     // 企标是否试行改变，标准状态需要跟着变,试行周期必填校验也跟着变
     'formInline.try_flag' (val) {
       if (val && this.flag === StandardSource.ENTERPRISE.value) {