diff --git a/exthernal-ttc-api/src/controllers/projectAddController.js b/exthernal-ttc-api/src/controllers/projectAddController.js
new file mode 100644
index 0000000..3ee66ca
--- /dev/null
+++ b/exthernal-ttc-api/src/controllers/projectAddController.js
@@ -0,0 +1,69 @@
+import { ProjectAddService } from '../services/projectAddService.js'
+import { sendError } from '../utils/response.js'
+// import { OftenError } from '../utils/oftenError.js'
+import { GeneralService } from '../share/generalservice.js';
+import { trim_all_array } from '../utils/trim.js'
+import { verifyToken, generateToken } from '../utils/token.js'
+import { Interface } from '../interfaces/Interface.js';
+
+
+export class projectAdd {
+
+  constructor() {
+    this.generalService = new GeneralService();
+    this.Interface = new Interface();
+    this.projectAddService = new ProjectAddService();
+  }
+
+  async onNavigate(req, res) {
+    this.generalService.devhint(1, 'projectAdd.js', 'onNavigate() start');
+    let organization = req.body.organization;
+    const prommis = await this.onProjectAdd(req, res, organization);
+    return prommis;
+  }
+
+  async onProjectAdd(req, res, database) {
+    let idx = -1
+    let aryResult = []
+    let latSeq = []
+    try {
+      let token = req.headers.authorization?.split(' ')[1];
+      const decoded = verifyToken(token);
+
+      let name = req.body.request.prjnam;
+      database = decoded.organization;
+
+      aryResult = await this.projectAddService.getProjectAdd(database, name);
+      latSeq = await this.projectAddService.getLatestProjectSeq(database);
+      //   this.generalService.devhint(1, 'budgetSearch.js', 'Login success');
+    } catch (error) {
+      idx = 1;
+    } finally {
+      if (idx === 1) return sendError('เกิดข้อผิดพลาดไม่คาดคิดเกิดขึ้น', 'Unexpected error');
+      // if (!aryResult) return sendError('ไม่พบการมีอยู่ของข้อมูล', 'Cannot Find Any Data');
+
+      if (aryResult == 0) {
+        let prommis = await this.makeArySave(req, latSeq[0].prjseq);
+        return prommis
+      } else {
+        return sendError('คีย์หลักซ้ำในระบบ', 'Duplicate Primary Key');
+      }
+    }
+  }
+
+
+  async makeArySave(req, latseq) {
+    let arysave = {
+      methods: 'post',
+      prjseq: latseq+1,
+      prjnam: req.body.request.prjnam,
+      prjusrseq: req.body.request.prjusrseq,
+      prjwntbdg: req.body.request.prjwntbdg,
+      prjacpbdg: req.body.request.prjacpbdg,
+      prjbdgcod: req.body.request.prjbdgcod,
+      prjcomstt: req.body.request.prjcomstt,
+      prjacpdtm: req.body.request.prjacpdtm
+    }
+    return this.Interface.saveInterface('prjmst', arysave, req);
+  }
+}
diff --git a/exthernal-ttc-api/src/routes/route.js b/exthernal-ttc-api/src/routes/route.js
index 65761f4..183eb1b 100644
--- a/exthernal-ttc-api/src/routes/route.js
+++ b/exthernal-ttc-api/src/routes/route.js
@@ -3,6 +3,7 @@ import express from 'express'
 import { budgetSearch } from '../controllers/budgetSearchController.js'
 import { budgetAdd } from '../controllers/budgetAddController.js'
 import { projectSearch } from '../controllers/projectSearchController.js'
+import { projectAdd } from '../controllers/projectAddController.js'
 import { budgetExpense } from '../controllers/budgetExpenseController.js'
 import { reportController } from '../controllers/ReportController.js'
 
@@ -15,6 +16,7 @@ const controller_budgetSearch_post = new budgetSearch()
 const controller_budgetAdd_post = new budgetAdd()
 const controller_budgetSetup_post = new budgetExpense()
 const controller_report_post = new reportController()
+const controller_projectAdd_post = new projectAdd()
 
 // router.post('/budgetSetup', async (req, res) => {
 //   const result = await controller_budgetSetup_post.onNavigate(req, res)
@@ -36,6 +38,11 @@ router.post('/projectsearch', async (req, res) => {
   if (result) return res.json(result)
 })
 
+router.post('/projectadd', async (req, res) => {
+  const result = await controller_projectAdd_post.onNavigate(req, res)
+  if (result) return res.json(result)
+})
+
 router.post('/budgetexpense', async (req, res) => {
   const result = await controller_budgetSetup_post.onNavigate(req, res)
   if (result) return res.json(result)
diff --git a/exthernal-ttc-api/src/services/projectAddService.js b/exthernal-ttc-api/src/services/projectAddService.js
new file mode 100644
index 0000000..294903f
--- /dev/null
+++ b/exthernal-ttc-api/src/services/projectAddService.js
@@ -0,0 +1,34 @@
+import { GeneralService } from '../share/generalservice.js'
+
+export class ProjectAddService {
+
+  constructor() {
+    this.generalService = new GeneralService()
+  }
+
+  async getProjectAdd(database, name) {
+    const sql = `
+      SELECT 
+        prjseq,
+        prjnam
+      FROM ${database}.prjmst
+      WHERE prjnam = $1
+  `
+    const params = [name]
+    const result = await this.generalService.executeQueryParam(database, sql, params);
+    return result
+  }
+
+  async getLatestProjectSeq(database) {
+    const sql = `
+      SELECT 
+        prjseq
+      FROM ${database}.prjmst
+      WHERE prjseq=(SELECT max(prjseq) FROM ${database}.prjmst)
+    `
+
+    const params = []
+    const result = await this.generalService.executeQueryParam(database, sql, params);
+    return result
+  }
+}
\ No newline at end of file