diff --git a/app/.idea/.gitignore b/app/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/app/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/app/.idea/gradle.xml b/app/.idea/gradle.xml
new file mode 100644
index 00000000..0364d75f
--- /dev/null
+++ b/app/.idea/gradle.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="GRADLE" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleJvm" value="jbr-17" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/app/.idea/misc.xml b/app/.idea/misc.xml
new file mode 100644
index 00000000..a318cae6
--- /dev/null
+++ b/app/.idea/misc.xml
@@ -0,0 +1,9 @@
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/app/.idea/vcs.xml b/app/.idea/vcs.xml
new file mode 100644
index 00000000..6c0b8635
--- /dev/null
+++ b/app/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 3248bed4..843b6fd0 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -27,6 +27,8 @@ android {
         buildConfigField("String", "BASE_URL", getBaseUrl("BASE_URL"))
         buildConfigField("String", "NAVER_CLIENT_ID", getBaseUrl("NAVER_CLIENT_ID"))
         buildConfigField("String", "NAVER_CLIENT_SECRET", getBaseUrl("NAVER_CLIENT_SECRET"))
+        buildConfigField("String", "KAKAO_NATIVE_APP_KEY", "\"${getBaseUrl("KAKAO_NATIVE_APP_KEY")}\"")
+        manifestPlaceholders["kakaoKey"] = "kakao${getBaseUrl("KAKAO_NATIVE_APP_KEY")}"
     }
 
     buildTypes {
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 3a0df392..b2322d17 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -32,6 +32,20 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
+        <activity
+            android:name="com.kakao.sdk.auth.AuthCodeHandlerActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+
+                <data android:host="oauth"
+                    android:scheme="${kakaoKey}" />
+            </intent-filter>
+        </activity>
+
         <activity
             android:name=".presentation.view.MainActivity"
             android:exported="true">
diff --git a/app/src/main/java/com/example/numberoneproject/data/network/ApiService.kt b/app/src/main/java/com/example/numberoneproject/data/network/ApiService.kt
index cc1fd0d4..1382df0a 100644
--- a/app/src/main/java/com/example/numberoneproject/data/network/ApiService.kt
+++ b/app/src/main/java/com/example/numberoneproject/data/network/ApiService.kt
@@ -22,6 +22,12 @@ interface ApiService {
         @Body body: TokenRequestBody
     ): ApiResult<LoginTokenResponse>
 
+    //카카오 로그인
+    @POST("/token/kakao")
+    suspend fun userKakaoLogin(
+        @Body body: TokenRequestBody
+    ): ApiResult<LoginTokenResponse>
+
     // 로그인 테스트
     @GET("/api/logintest")
     suspend fun apiLoginTest(
diff --git a/app/src/main/java/com/example/numberoneproject/data/repositoryimpl/LoginRepositoryImpl.kt b/app/src/main/java/com/example/numberoneproject/data/repositoryimpl/LoginRepositoryImpl.kt
index fa24055c..610ec2c8 100644
--- a/app/src/main/java/com/example/numberoneproject/data/repositoryimpl/LoginRepositoryImpl.kt
+++ b/app/src/main/java/com/example/numberoneproject/data/repositoryimpl/LoginRepositoryImpl.kt
@@ -22,6 +22,10 @@ class LoginRepositoryImpl @Inject constructor(
         return service.userNaverLogin(naverLoginBody)
     }
 
+    override suspend fun userKakaoLogin(kakaoLoginBody: TokenRequestBody): ApiResult<LoginTokenResponse>{
+        return service.userKakaoLogin(kakaoLoginBody)
+    }
+
     override suspend fun testLogin(token: String): ApiResult<LoginTestResponse> {
         return service.apiLoginTest(token)
     }
diff --git a/app/src/main/java/com/example/numberoneproject/domain/repository/LoginRepository.kt b/app/src/main/java/com/example/numberoneproject/domain/repository/LoginRepository.kt
index e55be3bb..8aafcc60 100644
--- a/app/src/main/java/com/example/numberoneproject/domain/repository/LoginRepository.kt
+++ b/app/src/main/java/com/example/numberoneproject/domain/repository/LoginRepository.kt
@@ -8,5 +8,6 @@ import com.example.numberoneproject.data.network.ApiResult
 interface LoginRepository {
     suspend fun refreshAccessToken(body: TokenRequestBody): ApiResult<LoginTokenResponse>
     suspend fun userNaverLogin(naverLoginBody: TokenRequestBody): ApiResult<LoginTokenResponse>
+    suspend fun userKakaoLogin(kakaoLoginBody: TokenRequestBody) : ApiResult<LoginTokenResponse>
     suspend fun testLogin(token: String) : ApiResult<LoginTestResponse>
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/numberoneproject/domain/usecase/KakaoLoginUsecase.kt b/app/src/main/java/com/example/numberoneproject/domain/usecase/KakaoLoginUsecase.kt
new file mode 100644
index 00000000..2a1c5984
--- /dev/null
+++ b/app/src/main/java/com/example/numberoneproject/domain/usecase/KakaoLoginUsecase.kt
@@ -0,0 +1,16 @@
+package com.example.numberoneproject.domain.usecase
+
+import com.example.numberoneproject.data.model.LoginTokenResponse
+import com.example.numberoneproject.data.model.TokenRequestBody
+import com.example.numberoneproject.data.network.ApiResult
+import com.example.numberoneproject.domain.repository.LoginRepository
+import javax.inject.Inject
+class KakaoLoginUsecase @Inject constructor(
+    private val loginRepository: LoginRepository
+) {
+    suspend operator fun invoke(
+        loginBody: TokenRequestBody
+    ) : ApiResult<LoginTokenResponse>{
+        return loginRepository.userKakaoLogin(loginBody)
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/numberoneproject/presentation/di/MyApplication.kt b/app/src/main/java/com/example/numberoneproject/presentation/di/MyApplication.kt
index d4ca38d8..1422b2a7 100644
--- a/app/src/main/java/com/example/numberoneproject/presentation/di/MyApplication.kt
+++ b/app/src/main/java/com/example/numberoneproject/presentation/di/MyApplication.kt
@@ -1,9 +1,15 @@
 package com.example.numberoneproject.presentation.di
 
 import android.app.Application
+import com.example.numberoneproject.BuildConfig
+import com.kakao.sdk.common.KakaoSdk
 import dagger.hilt.android.HiltAndroidApp
 
 @HiltAndroidApp
 class MyApplication: Application() {
-    
+    val KAKAO = BuildConfig.KAKAO_NATIVE_APP_KEY
+    override fun onCreate() {
+        super.onCreate()
+        KakaoSdk.init(this,KAKAO)
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/numberoneproject/presentation/view/LoginActivity.kt b/app/src/main/java/com/example/numberoneproject/presentation/view/LoginActivity.kt
index a9ad3ada..6edf4a3c 100644
--- a/app/src/main/java/com/example/numberoneproject/presentation/view/LoginActivity.kt
+++ b/app/src/main/java/com/example/numberoneproject/presentation/view/LoginActivity.kt
@@ -4,7 +4,9 @@ import android.content.Intent
 import android.os.Bundle
 import android.util.Log
 import android.view.View
+import android.widget.Toast
 import androidx.activity.viewModels
+import androidx.lifecycle.lifecycleScope
 import com.example.numberoneproject.BuildConfig
 import com.example.numberoneproject.R
 import com.example.numberoneproject.data.model.TokenRequestBody
@@ -14,6 +16,10 @@ import com.example.numberoneproject.presentation.base.BaseActivity
 import com.example.numberoneproject.presentation.util.Extensions.repeatOnStarted
 import com.example.numberoneproject.presentation.util.TokenManager
 import com.example.numberoneproject.presentation.viewmodel.LoginViewModel
+import com.kakao.sdk.auth.model.OAuthToken
+import com.kakao.sdk.common.model.ClientError
+import com.kakao.sdk.common.model.ClientErrorCause
+import com.kakao.sdk.user.UserApiClient
 import com.navercorp.nid.NaverIdLoginSDK
 import com.navercorp.nid.oauth.NidOAuthLogin
 import com.navercorp.nid.oauth.OAuthLoginCallback
@@ -21,6 +27,8 @@ import com.navercorp.nid.profile.NidProfileCallback
 import com.navercorp.nid.profile.data.NidProfileResponse
 import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.flow.collectLatest
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.launch
 
 @AndroidEntryPoint
 class LoginActivity : BaseActivity<ActivityLoginBinding>(R.layout.activity_login) {
@@ -106,4 +114,33 @@ class LoginActivity : BaseActivity<ActivityLoginBinding>(R.layout.activity_login
 
         NaverIdLoginSDK.authenticate(this, oauthLoginCallback)
     }
+
+    fun setupKakaoLogin(view:View){
+        //카카오 계정 로그인
+        val callback : (OAuthToken?, Throwable?) -> Unit = {token, error->
+            if(error != null){
+                Toast.makeText(this,"카카오계정 로그인 실패 ${error}",Toast.LENGTH_SHORT).show()
+            }
+            else if(token != null){
+                loginVM.userKakaoLogin(TokenRequestBody(token.accessToken))
+            }
+        }
+        //카카오톡 어플있다면 카카오톡 로그인 시도
+        if(UserApiClient.instance.isKakaoTalkLoginAvailable(this)){
+            UserApiClient.instance.loginWithKakaoTalk(this){token, error->
+                if(error != null){
+                    Toast.makeText(this,"카카오톡 로그인 실패 ${error}",Toast.LENGTH_SHORT).show()
+                    if(error is ClientError && error.reason == ClientErrorCause.Cancelled){
+                        return@loginWithKakaoTalk
+                    }
+                    UserApiClient.instance.loginWithKakaoAccount(this, callback = callback)
+                }else if(token != null){
+                    loginVM.userKakaoLogin(TokenRequestBody(token.accessToken))
+                }
+            }
+        }
+        else{
+            UserApiClient.instance.loginWithKakaoAccount(this, callback=callback)
+        }
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/numberoneproject/presentation/view/SplashActivity.kt b/app/src/main/java/com/example/numberoneproject/presentation/view/SplashActivity.kt
index cadd8852..c1529f5f 100644
--- a/app/src/main/java/com/example/numberoneproject/presentation/view/SplashActivity.kt
+++ b/app/src/main/java/com/example/numberoneproject/presentation/view/SplashActivity.kt
@@ -10,20 +10,27 @@ import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
 import android.os.Handler
 import android.os.Looper
+import android.util.Log
 import android.widget.Toast
+import androidx.lifecycle.lifecycleScope
 import com.example.numberoneproject.R
+import com.example.numberoneproject.presentation.util.Extensions.repeatOnStarted
+import com.example.numberoneproject.presentation.util.TokenManager
+import kotlinx.coroutines.flow.collectLatest
+import kotlinx.coroutines.launch
 
 class SplashActivity : AppCompatActivity() {
     private val DURATION_TIME = 2000L    // 스플래시 화면 지연시간
     private lateinit var cm2 : ConnectivityManager
+    private val tokenManager: TokenManager = TokenManager(this)
 
     private val networkCallBack = object : ConnectivityManager.NetworkCallback() {
         override fun onAvailable(network: Network) {
             // 네트워크가 정상적인 경우
             Toast.makeText(this@SplashActivity, "연결성공 $network", Toast.LENGTH_SHORT).show()
-
+            checkLogin()
             Handler(Looper.getMainLooper()).postDelayed({
-                startActivity(Intent( this@SplashActivity,LoginActivity::class.java))
+                //startActivity(Intent( this@SplashActivity,LoginActivity::class.java))
                 finish()
             }, DURATION_TIME)
         }
@@ -38,12 +45,29 @@ class SplashActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_splash)
 
+
         val builder = NetworkRequest.Builder()
 
         cm2 = this.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
         cm2.registerNetworkCallback(builder.build(),networkCallBack)
     }
 
+    //자동로그인 가능한지 확인
+    fun checkLogin(){
+        lifecycleScope.launch{
+            tokenManager.accessToken.collectLatest {
+                if(it.isNotEmpty()){
+                    val intent = Intent(this@SplashActivity,MainActivity::class.java)
+                    startActivity(intent)
+                }
+                else{
+                    val intent = Intent(this@SplashActivity,LoginActivity::class.java)
+                    startActivity(intent)
+                }
+            }
+        }
+    }
+
     override fun onDestroy() {
         super.onDestroy()
         cm2 = this.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
diff --git a/app/src/main/java/com/example/numberoneproject/presentation/viewmodel/LoginViewModel.kt b/app/src/main/java/com/example/numberoneproject/presentation/viewmodel/LoginViewModel.kt
index 98822347..170c7037 100644
--- a/app/src/main/java/com/example/numberoneproject/presentation/viewmodel/LoginViewModel.kt
+++ b/app/src/main/java/com/example/numberoneproject/presentation/viewmodel/LoginViewModel.kt
@@ -7,6 +7,7 @@ import com.example.numberoneproject.data.model.TokenRequestBody
 import com.example.numberoneproject.data.network.ApiResult
 import com.example.numberoneproject.data.network.onFailure
 import com.example.numberoneproject.data.network.onSuccess
+import com.example.numberoneproject.domain.usecase.KakaoLoginUsecase
 import com.example.numberoneproject.domain.usecase.NaverLoginUseCase
 import com.example.numberoneproject.domain.usecase.RefreshAccessTokenUseCase
 import com.example.numberoneproject.domain.usecase.TestUseCase
@@ -22,6 +23,7 @@ import javax.inject.Inject
 class LoginViewModel @Inject constructor(
     private val tokenManager: TokenManager,
     private val naverLoginUseCase: NaverLoginUseCase,
+    private val kakaoLoginUsecase: KakaoLoginUsecase,
     private val testLoginUseCase: TestUseCase,
     private val refreshAccessTokenUseCase: RefreshAccessTokenUseCase
 ) : ViewModel() {
@@ -41,6 +43,18 @@ class LoginViewModel @Inject constructor(
         }
     }
 
+    fun userKakaoLogin(loginBody: TokenRequestBody) {
+        viewModelScope.launch {
+            kakaoLoginUsecase(loginBody)
+                .onSuccess {
+                    tokenManager.writeLoginTokens(it.accessToken, it.refreshToken)
+                }
+                .onFailure {
+                    _loginErrorState.value = it
+                }
+        }
+    }
+
     /** loginTest 관련 코드는 지금은 테스트 용도고 금방 지워질 코드 **/
     fun loginTest() {
         viewModelScope.launch {
diff --git a/app/src/main/res/layout/activity_login.xml b/app/src/main/res/layout/activity_login.xml
index f8cb6ab2..42143d6c 100644
--- a/app/src/main/res/layout/activity_login.xml
+++ b/app/src/main/res/layout/activity_login.xml
@@ -22,7 +22,8 @@
             android:textSize="24sp"
             android:textStyle="bold"
             android:textColor="#FFEB3B"
-            android:text="카카오 로그인" />
+            android:text="카카오 로그인"
+            android:onClick="@{(v) -> activity.setupKakaoLogin(v)}"/>
 
         <TextView
             android:id="@+id/btn_naver_login"