diff --git a/BACKEND/app/controllers/healcheck_controller.ts b/BACKEND/app/controllers/healcheck_controller.ts
index 9b03e44..e61ad1e 100644
--- a/BACKEND/app/controllers/healcheck_controller.ts
+++ b/BACKEND/app/controllers/healcheck_controller.ts
@@ -1,11 +1,42 @@
 import type { HttpContext } from '@adonisjs/core/http'
 import axios from 'axios'
+import fs from 'fs'
+import path from 'path'
 
 const linkWiki =
   process.env.LINK_WIKI || 'https://logs.danielvu.com/api/wiki/page/insert?title=Dev_test'
 const remoteUrl = process.env.ERP_URL || 'https://stage.nswteam.net'
 
 export default class HealCheckController {
+  private saveErrorLog(error: any) {
+    try {
+      const logsDir = path.join(process.cwd(), 'storage', 'health-check')
+
+      // Tạo thư mục nếu không tồn tại
+      if (!fs.existsSync(logsDir)) {
+        fs.mkdirSync(logsDir, { recursive: true })
+      }
+
+      const timestamp = new Date().toISOString()
+      const fileName = `healthcheck-error-${new Date().toISOString().split('T')[0]}.log`
+      const filePath = path.join(logsDir, fileName)
+
+      const errorContent = `
+=== ERROR LOG ===
+Time: ${timestamp}
+Message: ${error?.message || 'Unknown error'}
+Status: ${error?.response?.status || 'N/A'}
+URL: ${error?.response?.config?.url || 'N/A'}
+Error Details: ${JSON.stringify(error?.response?.data || error, null, 2)}
+---
+`
+
+      fs.appendFileSync(filePath, errorContent)
+      console.log(`Error logged to: ${filePath}`)
+    } catch (logError) {
+      console.error('Failed to save error log:', logError)
+    }
+  }
   // GET /health-check
   async check({ }: HttpContext) {
     try {
@@ -80,6 +111,9 @@ export default class HealCheckController {
         ],
       }
     } catch (error: any) {
+      // Lưu log lỗi
+      this.saveErrorLog(error)
+
       return {
         code: 200,
         data: [