diff --git a/src/config/settings.py b/src/config/settings.py
index 76e8191..2f7fd98 100644
--- a/src/config/settings.py
+++ b/src/config/settings.py
@@ -153,4 +153,13 @@
 
 
 # Rest Framework
-REST_FRAMEWORK = {"DEFAULT_AUTHENTICATION_CLASSES": ("rest_framework_simplejwt.authentication.JWTAuthentication",)}
+REST_FRAMEWORK = {
+    "DEFAULT_AUTHENTICATION_CLASSES": ("rest_framework_simplejwt.authentication.JWTAuthentication",),
+}
+
+# Swagger
+SWAGGER_SETTINGS = {
+    "SECURITY_DEFINITIONS": {
+        "Bearer": {"type": "apiKey", "name": "Authorization", "in": "header"},
+    },
+}
diff --git a/src/users/serializers.py b/src/users/serializers.py
index f8542ff..ce5366b 100644
--- a/src/users/serializers.py
+++ b/src/users/serializers.py
@@ -1,9 +1,9 @@
 from django.contrib.auth import get_user_model
 from django.contrib.auth.password_validation import validate_password
-from rest_framework.serializers import ModelSerializer
+from rest_framework import serializers
 
 
-class UserSignUpSerializer(ModelSerializer):
+class UserSignUpSerializer(serializers.ModelSerializer):
     class Meta:
         model = get_user_model()
         fields = ("username", "password")
@@ -19,3 +19,25 @@ def create(self, validated_data):
         user.set_password(raw_password)
         user.save()
         return user
+
+
+class SignInRequestSerializer(serializers.Serializer):
+    username = serializers.CharField()
+    password = serializers.CharField()
+
+    def create(self, validated_data):
+        raise NotImplementedError()
+
+    def update(self, instance, validated_data):
+        raise NotImplementedError()
+
+
+class SignInResponseSerializer(serializers.Serializer):
+    access = serializers.CharField()
+    refresh = serializers.CharField()
+
+    def create(self, validated_data):
+        raise NotImplementedError()
+
+    def update(self, instance, validated_data):
+        raise NotImplementedError()
diff --git a/src/users/urls.py b/src/users/urls.py
index 4a2c781..8283408 100644
--- a/src/users/urls.py
+++ b/src/users/urls.py
@@ -1,9 +1,8 @@
 from django.urls import path
-from rest_framework_simplejwt.views import TokenObtainPairView
 
-from users.views import SignUpAPIView
+from users.views import SignInAPIView, SignUpAPIView
 
 urlpatterns = [
     path("signup/", view=SignUpAPIView.as_view(), name="signup"),
-    path("signin/", view=TokenObtainPairView.as_view(), name="signin"),
+    path("signin/", view=SignInAPIView.as_view(), name="signin"),
 ]
diff --git a/src/users/views.py b/src/users/views.py
index 9828bbf..af4da48 100644
--- a/src/users/views.py
+++ b/src/users/views.py
@@ -2,8 +2,13 @@
 from rest_framework import status
 from rest_framework.response import Response
 from rest_framework.views import APIView
+from rest_framework_simplejwt.views import TokenObtainPairView
 
-from users.serializers import UserSignUpSerializer
+from users.serializers import (
+    SignInRequestSerializer,
+    SignInResponseSerializer,
+    UserSignUpSerializer,
+)
 
 
 class SignUpAPIView(APIView):
@@ -26,9 +31,15 @@ def post(self, request):
         )
 
 
-class SignInAPIView(APIView):
+class SignInAPIView(TokenObtainPairView):
     @swagger_auto_schema(
         operation_summary="사용자 로그인",
+        request_body=SignInRequestSerializer,
+        responses={
+            status.HTTP_200_OK: SignInResponseSerializer,
+            status.HTTP_400_BAD_REQUEST: "error",
+            status.HTTP_401_UNAUTHORIZED: "unauthorized",
+        },
     )
-    def post(self, request):
-        return
+    def post(self, request, *args, **kwargs):
+        return super().post(request, *args, **kwargs)