diff --git a/src/controllers/OrgChild1Controller.ts b/src/controllers/OrgChild1Controller.ts
index 4ad0c29b..fca3a6df 100644
--- a/src/controllers/OrgChild1Controller.ts
+++ b/src/controllers/OrgChild1Controller.ts
@@ -130,6 +130,12 @@ export class OrgChild1Controller {
     if (chkCode != null) {
       throw new HttpError(HttpStatusCode.INTERNAL_SERVER_ERROR, "รหัสหน่วยงานนี้มีอยู่ในระบบแล้ว");
     }
+    const order:any = await this.child1Repository.findOne({
+      where: {
+        orgRootId: requestBody.orgRootId
+      },
+      order: { orgChild1Order: "DESC" }
+    })
     try {
       const child1 = Object.assign(new OrgChild1(), requestBody) as OrgChild1;
       child1.orgChild1Name = requestBody.orgChild1Name;
@@ -139,6 +145,7 @@ export class OrgChild1Controller {
       child1.lastUpdateFullName = request.user.name;
       child1.orgRevisionId = String(rootIdExits?.orgRevisionId);
       child1.orgRootId = String(rootIdExits?.id);
+      child1.orgChild1Order = order.orgChild1Order == null ? 1 : order.orgChild1Order+1;
       await this.child1Repository.save(child1);
       return new HttpSuccess();
     } catch (error) {
diff --git a/src/controllers/OrgChild2Controller.ts b/src/controllers/OrgChild2Controller.ts
index 8bc250a6..a4b7ac85 100644
--- a/src/controllers/OrgChild2Controller.ts
+++ b/src/controllers/OrgChild2Controller.ts
@@ -136,6 +136,12 @@ export class OrgChild2Controller extends Controller {
     if (!validOrgChild2Ranks.includes(requestBody.orgChild2Rank.toUpperCase())) {
       throw new HttpError(HttpStatusCode.NOT_FOUND, "not found. orgChild2Rank");
     }
+    const order:any = await this.child2Repository.findOne({
+      where: {
+        orgChild1Id: requestBody.orgChild1Id
+      },
+      order: { orgChild2Order: "DESC" }
+    })
     try {
       const child2 = Object.assign(new OrgChild2(), requestBody) as OrgChild2;
       child2.orgChild2Name = requestBody.orgChild2Name;
@@ -146,6 +152,7 @@ export class OrgChild2Controller extends Controller {
       child2.orgRootId = String(child1?.orgRootId);
       child2.orgRevisionId = String(child1?.orgRevisionId);
       child2.orgChild1Id = String(child1?.id);
+      child2.orgChild2Order = order.orgChild2Order == null ? 1 : order.orgChild2Order+1;
       await this.child2Repository.save(child2);
       return new HttpSuccess();
     } catch (error) {
diff --git a/src/controllers/OrgChild3Controller.ts b/src/controllers/OrgChild3Controller.ts
index a5b0bb25..82b73085 100644
--- a/src/controllers/OrgChild3Controller.ts
+++ b/src/controllers/OrgChild3Controller.ts
@@ -118,6 +118,12 @@ export class OrgChild3Controller {
     if (!validOrgChild3Ranks.includes(requestBody.orgChild3Rank.toUpperCase())) {
       throw new HttpError(HttpStatusCode.NOT_FOUND, "not found. orgChild3Rank");
     }
+    const order:any = await this.child3Repository.findOne({
+      where: {
+        orgChild2Id: requestBody.orgChild2Id
+      },
+      order: { orgChild3Order: "DESC" }
+    })
     try {
       const child3 = Object.assign(new OrgChild3(), requestBody) as OrgChild3;
       child3.orgChild3Name = requestBody.orgChild3Name;
@@ -129,6 +135,7 @@ export class OrgChild3Controller {
       child3.orgChild1Id = String(child2?.orgChild1Id);
       child3.orgRevisionId = String(child2?.orgRevisionId);
       child3.orgChild2Id = String(child2?.id);
+      child3.orgChild3Order = order.orgChild3Order == null ? 1 : order.orgChild3Order+1;
       await this.child3Repository.save(child3);
       return new HttpSuccess();
     } catch (error) {
diff --git a/src/controllers/OrgChild4Controller.ts b/src/controllers/OrgChild4Controller.ts
index f590cec1..e25f08ed 100644
--- a/src/controllers/OrgChild4Controller.ts
+++ b/src/controllers/OrgChild4Controller.ts
@@ -134,6 +134,12 @@ export class OrgChild4Controller extends Controller {
     if (!validOrgChild4Ranks.includes(requestBody.orgChild4Rank.toUpperCase())) {
       throw new HttpError(HttpStatusCode.NOT_FOUND, "not found. orgChild4Rank");
     }
+    const order:any = await this.child4Repository.findOne({
+      where: {
+        orgChild3Id: requestBody.orgChild3Id
+      },
+      order: { orgChild4Order: "DESC" }
+    })
     try {
       const child4 = Object.assign(new OrgChild4(), requestBody) as OrgChild4;
       child4.orgChild4Name = requestBody.orgChild4Name;
@@ -146,6 +152,7 @@ export class OrgChild4Controller extends Controller {
       child4.orgChild2Id = String(child3?.orgChild2Id);
       child4.orgRevisionId = String(child3?.orgRevisionId);
       child4.orgChild3Id = String(child3?.id);
+      child4.orgChild4Order = order.orgChild4Order == null ? 1 : order.orgChild4Order+1;
       await this.child4Repository.save(child4);
 
       return new HttpSuccess();
diff --git a/src/controllers/OrgRootController.ts b/src/controllers/OrgRootController.ts
index 2dda6f63..4e3aed70 100644
--- a/src/controllers/OrgRootController.ts
+++ b/src/controllers/OrgRootController.ts
@@ -128,11 +128,18 @@ export class OrgRootController extends Controller {
         "not found. orgRevisionIsDraft:true, orgRevisionIsCurrent:false",
       );
     }
+    const order:any = await this.orgRootRepository.findOne({
+      where: {
+        orgRevisionId: requestBody.orgRevisionId
+      },
+      order: { orgRootOrder: "DESC" }
+    })
     try {
       orgRoot.createdUserId = request.user.sub;
       orgRoot.createdFullName = request.user.name;
       orgRoot.lastUpdateUserId = request.user.sub;
       orgRoot.lastUpdateFullName = request.user.name;
+      orgRoot.orgRootOrder = order.orgRootOrder == null ? 1 : order.orgRootOrder+1;
       await this.orgRootRepository.save(orgRoot);
 
       return new HttpSuccess();