diff --git a/README.md b/README.md
index c661923..b44bc4c 100644
--- a/README.md
+++ b/README.md
@@ -19,4 +19,5 @@ http://52.79.152.220:8000/
   2. $ python manage.py makemigrations
   3. $ python manage.py migrates
 ```
-issue관련해서 질문이 있는경우 바로 말씀해주세요!
+- css설정 때문에 화면 창을 줄이면 레이아웃이 망가질 수 있습니다ㅠ 창 크기를 최대로 해서 사용해주세요
+- issue관련해서 질문이 있는경우 바로 말씀해주세요!
diff --git a/users/models.py b/users/models.py
index edfc39a..5a9c909 100644
--- a/users/models.py
+++ b/users/models.py
@@ -9,7 +9,7 @@ class User(AbstractUser):
    username = None
    
    name = models.CharField(default="name", max_length=64)
-   email = models.CharField(default="email", max_length=64)
+   email = models.CharField(default="email", max_length=64, unique=True)
    password = models.CharField(default="password", max_length=64)
    birth = models.CharField(default="birth", max_length=8)
 
diff --git a/users/templates/signup.html b/users/templates/signup.html
index c166bee..ab93a01 100644
--- a/users/templates/signup.html
+++ b/users/templates/signup.html
@@ -22,7 +22,9 @@ <h6 id="sub">Leave perfume where you're staying</h6>
         <div class="input-element">
             <div>
                 <!--이름 입력창-->
-                <label style="color:#934BF1; font-weight:700;">EMAIL</label><br>
+                <label style="color:#934BF1; font-weight:700;">EMAIL</label>
+                <label style="color:#FF0000; font-weight:700;">  {{emailerror}}</label>
+                <br>
                 <input type="email" name="email" placeholder="이메일을 입력하세요.  ex) 의현님짱@likelion.org" id="email" required>
             </div>
             <div>
@@ -32,7 +34,8 @@ <h6 id="sub">Leave perfume where you're staying</h6>
             </div>
             <div>
                 <!--PASSWORD입력창-->
-                <label style="color:#934BF1; font-weight:700;">PASSWORD</label><br>
+                <label style="color:#934BF1; font-weight:700;">PASSWORD</label>
+                <label style="color:#FF0000; font-weight:700;">  {{pwerror}}</label><br>
                 <input type="password" name="password" placeholder="비밀번호를 입력하세요." id="password" required>
             </div>
             <div>
diff --git a/users/views.py b/users/views.py
index b7b8806..f86be47 100644
--- a/users/views.py
+++ b/users/views.py
@@ -1,4 +1,4 @@
-from django.shortcuts import render, redirect
+from django.shortcuts import get_object_or_404, render, redirect
 from django.contrib.auth import authenticate, logout
 from .models import User , Blog
 from django.contrib import auth
@@ -18,15 +18,19 @@ def signup(request):
         re_password = request.POST.get('re_password', False)
         birth = request.POST.get('birth', False)
         if password != re_password :
-            return render(request, 'signup.html' , {'error' : 'password incorrect!'})
+            return render(request, 'signup.html' , {'pwerror' : 'password incorrect!'})
         else:
-           user = User.objects.create_user(email, password)
-           user.birth = birth
-           user.re_password = re_password
-           user.name = name
-           user.save()
-
-           return redirect('/')
+            try:
+                is_valid = User.objects.get(email=email)
+            except:
+                user = User.objects.create_user(email, password)
+                user.birth = birth
+                user.re_password = re_password
+                user.name = name
+                user.save()
+                return redirect('/')
+
+            return render(request, 'signup.html', {'emailerror':'중복된 아이디입니다'})
 
     return render(request, 'signup.html')