diff --git a/app/Controllers/BaseController.php b/app/Controllers/BaseController.php
index 637a696..fecd5ff 100644
--- a/app/Controllers/BaseController.php
+++ b/app/Controllers/BaseController.php
@@ -8,7 +8,7 @@ use CodeIgniter\Controller;
 
 abstract class BaseController extends Controller
 {
-    protected $helpers = ['array', 'function'];
+    protected $helpers = ['array', 'function', 'cookie'];
 
     protected $session;
     protected $data = [];
diff --git a/app/Controllers/Login.php b/app/Controllers/Login.php
index 308f6b9..e93910e 100644
--- a/app/Controllers/Login.php
+++ b/app/Controllers/Login.php
@@ -15,7 +15,12 @@ class Login extends BaseController
 
     public function index(): string
     {
-        return view('pages/login');
+        $user_id = get_cookie('save_id');
+        if (!empty($user_id)) {
+            $this->data['user_id'] = $user_id;
+        }
+
+        return view('pages/login', $this->data);
     }
 
     // 로그인
@@ -63,6 +68,7 @@ class Login extends BaseController
              * ------------------------------------*/
             $userId = $this->request->getPost('user_id');
             $userPw = $this->request->getPost('user_pw');
+            $saveId = $this->request->getPost('saveId');
 
             $this->loginModel = new LoginModel();
             $user = $this->loginModel->getUserByIdPw($userId, $userPw);
@@ -111,6 +117,14 @@ class Login extends BaseController
                 'logged_in' => true
             ];
 
+            // 아이디 저장
+            if (!empty($saveId)) {
+                if ($saveId === "Y") {
+                    $period = 60 * 60 * 24 * 90;
+                    set_cookie('save_id', $userId, $period);
+                }
+            }
+
             $logs['results'] = 1;
             $logs['usr_sq'] = $user['usr_sq'];
             $logs['reason'] = '로그인 성공';
diff --git a/app/Views/pages/login.php b/app/Views/pages/login.php
index b9334e0..4b35f01 100644
--- a/app/Views/pages/login.php
+++ b/app/Views/pages/login.php
@@ -81,6 +81,7 @@
                                 <form class="" id="frm_login_info">
                                     <div class="form-floating mb-4">
                                         <input name="user_id" id="user_id" placeholder="아이디 입력" type="text"
+                                            value="<?= $user_id ?? '' ?>"
                                             class="form-control form-control-lg border-0 shadow-sm"
                                             style="border-radius: 16px; background: rgba(248, 250, 252, 0.8); height: 58px;">
                                         <label for="user_id" class="text-muted">
@@ -101,9 +102,11 @@
 
                                     <div class="d-flex justify-content-between align-items-center mb-4">
                                         <div class="form-check">
-                                            <input name="check" id="exampleCheck" type="checkbox"
-                                                class="form-check-input" style="transform: scale(1.2);">
-                                            <label for="exampleCheck"
+                                            <input id="saveId" name="saveId" type="checkbox" class="form-check-input"
+                                                style="transform: scale(1.2);" value="Y" <?php if (!empty($user_id)) {
+                                                    echo "checked";
+                                                } ?>>
+                                            <label for="saveId"
                                                 class="form-check-label text-muted fw-medium">아이디저장</label>
                                         </div>
                                         <a onclick="faxOpen();" class="text-primary text-decoration-none fw-semibold">