diff --git a/users/services.py b/users/services.py
index 8dee258..74182e3 100644
--- a/users/services.py
+++ b/users/services.py
@@ -8,14 +8,19 @@ from datetime import timedelta
 # 30일 이전 일수 계산
 thirty_days_ago = timezone.now() - timedelta(days=30)
 
+DUPLICATE_CHECK = {
+    'email': 'email',
+    'nickname': 'nickname'
+}
+
 class CheckUserFieldDuplicateService:
     @staticmethod
-    def check_nickname_duplicate(query):
-        pass
-
-    @staticmethod
-    def check_custom_url_duplicate():
-        pass
+    def check_duplicate(field: str, value: str) -> bool:
+        if field not in DUPLICATE_CHECK:
+            raise ValueError(f"{field}는 지원하지 않는 필드입니다.")
+        
+        filter_dict = {DUPLICATE_CHECK[field]:value}
+        return  User.objects.filter(**filter_dict).exists()