diff --git a/src/controllers/OrgChild1Controller.ts b/src/controllers/OrgChild1Controller.ts
index c13f6ca2..b7d928c7 100644
--- a/src/controllers/OrgChild1Controller.ts
+++ b/src/controllers/OrgChild1Controller.ts
@@ -1,5 +1,7 @@
 import  { AppDataSource }  from "../database/data-source";
 import { OrgChild1, CreateOrgChild1, UpdateOrgChild1 } from "../entities/OrgChild1";
+import { OrgChild2 } from "../entities/OrgChild2";
+
 import {
     Body,
     Delete,
@@ -28,7 +30,8 @@ import HttpError from "../interfaces/http-error";
 @SuccessResponse(HttpStatusCode.OK, "สำเร็จ")
 
 export class OrgChild1Controller {
-  private child1Repository = AppDataSource.getRepository(OrgChild1)
+  private child1Repository = AppDataSource.getRepository(OrgChild1);
+  private child2Repository = AppDataSource.getRepository(OrgChild2);
 
   /**
    *   API สร้างโครงสร้างระดับ1
@@ -43,11 +46,11 @@ export class OrgChild1Controller {
     ){
       try {
         const chkOrder = await this.child1Repository.findOne({ where: { orgRootId:requestBody.orgRootId, orgChild1Order:requestBody.orgChild1Order }});
-        if (chkOrder != null) {
+        if (chkOrder != null){
           throw new HttpError(HttpStatusCode.NOT_FOUND, "ลำดับที่ของหน่วยงานนี้มีอยู่ในระบบแล้ว");
         }
         const chkCode = await this.child1Repository.findOne({ where: { orgRootId:requestBody.orgRootId, orgChild1Code:requestBody.orgChild1Code }});
-        if (chkCode != null) {
+        if (chkCode != null){
           throw new HttpError(HttpStatusCode.NOT_FOUND, "รหัสหน่วยงานนี้มีอยู่ในระบบแล้ว");
         }
         const child1 = Object.assign(new OrgChild1(), requestBody) as OrgChild1;
@@ -63,7 +66,7 @@ export class OrgChild1Controller {
         
       } catch (error) {
       // return new HttpError(HttpStatusCode.INTERNAL_SERVER_ERROR, String(error))
-        return error
+        return error;
       }
     }
   
@@ -82,7 +85,7 @@ export class OrgChild1Controller {
     ) {
     try {
       const child1 = await this.child1Repository.findOne({ where: { id } });
-      if (!child1) {
+      if (!child1){
         throw new HttpError(HttpStatusCode.NOT_FOUND, "not found.");
       }
       child1.lastUpdateUserId = request.user.sub;
@@ -92,9 +95,35 @@ export class OrgChild1Controller {
       await this.child1Repository.save(child1);
       return new HttpSuccess();
     } catch (error) {
-      return error
+      return error;
     }
   }
 
+  /**
+   * API ลบโครงสร้างระดับ1
+   *
+   * @summary ORG_006 - ลบโครงสร้างระดับ1 (ADMIN) #6
+   *
+   * @param {string} id id สร้างโครงสร้างระดับ1 
+   */
+  @Delete("{id}")
+  async delete(
+    @Path() id: string,
+  ) {
+    try {
+      const child1 = await this.child1Repository.findOne({ where: { id } });
+      if (!child1) {
+        throw new HttpError(HttpStatusCode.NOT_FOUND, "not found.");
+      }
+      const exitsChild2 = await this.child2Repository.findOne({ where: { orgChild1Id: id  } });
+      if(exitsChild2){
+        throw new HttpError(HttpStatusCode.CONFLICT, "ไม่สามารถลบได้ เนื่องจาก id ผูกกับโครงสร้างระดับ2");
+      }
+      await this.child1Repository.remove(child1);
+      return new HttpSuccess();
+    } catch (error) {
+      return error;
+    }
+  }
     
 }