diff --git a/feature/main/src/main/java/org/sopt/main/login/LoginContract.kt b/feature/main/src/main/java/org/sopt/main/login/LoginContract.kt
index 6654aa8..f65aac4 100644
--- a/feature/main/src/main/java/org/sopt/main/login/LoginContract.kt
+++ b/feature/main/src/main/java/org/sopt/main/login/LoginContract.kt
@@ -3,18 +3,7 @@ package org.sopt.main.login
 data class LoginState(
     val id: String = "",
     val password: String = "",
-    val registeredId: String = "",
-    val registeredPassword: String = "",
-    val registeredName: String = "",
-    val registeredHobby: String = "",
-    val isAutoLogin: Boolean = false,
-) {
-    fun checkRegister() = registeredId.isBlank() || registeredPassword.isBlank()
-
-    fun matchesUserInfo(id: String, password: String) =
-        registeredId == id && registeredPassword == password
-
-}
+)
 
 sealed interface LoginSideEffect {
     data class showSnackbar(val message: String) : LoginSideEffect
diff --git a/feature/main/src/main/java/org/sopt/main/login/LoginViewModel.kt b/feature/main/src/main/java/org/sopt/main/login/LoginViewModel.kt
index c01cd1b..90c3653 100644
--- a/feature/main/src/main/java/org/sopt/main/login/LoginViewModel.kt
+++ b/feature/main/src/main/java/org/sopt/main/login/LoginViewModel.kt
@@ -1,44 +1,33 @@
 package org.sopt.main.login
 
+import android.util.Log
+import androidx.lifecycle.SavedStateHandle
 import androidx.lifecycle.ViewModel
 import dagger.hilt.android.lifecycle.HiltViewModel
 import org.orbitmvi.orbit.Container
 import org.orbitmvi.orbit.ContainerHost
 import org.orbitmvi.orbit.syntax.simple.intent
 import org.orbitmvi.orbit.syntax.simple.postSideEffect
-import org.orbitmvi.orbit.syntax.simple.reduce
 import org.orbitmvi.orbit.viewmodel.container
-import org.sopt.domain.repo.UserDataRepository
+import org.sopt.domain.repo.AuthRepository
+import org.sopt.main.login.navigation.LoginRoute
 import org.sopt.ui.orbit.updateState
 import javax.inject.Inject
 
 @HiltViewModel
 class LoginViewModel @Inject constructor(
-    private val userDataRepository: UserDataRepository,
+    private val authRepository: AuthRepository,
+    savedStateHandle: SavedStateHandle,
 ) : ContainerHost<LoginState, LoginSideEffect>, ViewModel() {
     override val container: Container<LoginState, LoginSideEffect> = container(LoginState())
 
+    private val isSignupSuccess: Boolean =
+        savedStateHandle.get<String>(LoginRoute.IS_SIGNUP_SUCESS).toBoolean()
+
     init {
-        getUserData()
         intent {
-            container.stateFlow.collect {
-                if (it.isAutoLogin) {
-                    postSideEffect(LoginSideEffect.LoginSuccess)
-                }
-            }
-        }
-    }
-
-    fun getUserData() = intent {
-        userDataRepository.getUserData().collect {
-            reduce {
-                state.copy(
-                    registeredId = it.id,
-                    registeredPassword = it.pw,
-                    registeredHobby = it.hobby,
-                    registeredName = it.name,
-                    isAutoLogin = it.autoLogin,
-                )
+            if (isSignupSuccess) {
+                postSideEffect(LoginSideEffect.SignupSuccess)
             }
         }
     }
@@ -48,20 +37,21 @@ class LoginViewModel @Inject constructor(
     }
 
     fun login() = intent {
-        with(state) {
-            when {
-                checkRegister() -> {
-                    postSideEffect(LoginSideEffect.showSnackbar("회원가입 먼저하셈"))
-                }
-                matchesUserInfo(state.id, state.password) -> {
-                    userDataRepository.setAutoLogin(true)
-                }
-
-                else -> postSideEffect(LoginSideEffect.showSnackbar("로그인 실패"))
+        authRepository.postSignin(
+            id = state.id,
+            pw = state.password
+        ).onSuccess {
+            if (it.code !in 200..299) {
+                postSideEffect(LoginSideEffect.showSnackbar(it.message))
+            } else {
+                postSideEffect(LoginSideEffect.LoginSuccess)
             }
+        }.onFailure {
+            Log.e("throwable", it.toString())
         }
     }
 
+
     fun updateId(id: String) = updateState { copy(id = id) }
     fun updatePw(pw: String) = updateState { copy(password = pw) }
 }
\ No newline at end of file
diff --git a/feature/main/src/main/java/org/sopt/main/login/navigation/LoginNavigation.kt b/feature/main/src/main/java/org/sopt/main/login/navigation/LoginNavigation.kt
index 38fa2b3..4858974 100644
--- a/feature/main/src/main/java/org/sopt/main/login/navigation/LoginNavigation.kt
+++ b/feature/main/src/main/java/org/sopt/main/login/navigation/LoginNavigation.kt
@@ -3,11 +3,15 @@ package org.sopt.main.login.navigation
 import androidx.compose.ui.Modifier
 import androidx.navigation.NavController
 import androidx.navigation.NavGraphBuilder
+import androidx.navigation.NavType
 import androidx.navigation.compose.composable
+import androidx.navigation.navArgument
 import org.sopt.main.login.LoginRoute
+import org.sopt.main.login.navigation.LoginRoute.IS_SIGNUP_SUCESS
+import org.sopt.main.login.navigation.LoginRoute.loginRoute
 
-fun NavController.navigateLogin() {
-    navigate(LoginRoute.route) {
+fun NavController.navigateLogin(isSignupSuccess: Boolean) {
+    navigate(loginRoute(isSignupSuccess.toString())) {
         popUpTo(this@navigateLogin.graph.startDestinationId) {
             inclusive = true
         }
@@ -20,14 +24,23 @@ fun NavGraphBuilder.loginNavGraph(
     navigateSignup: () -> Unit = {},
     navigateHome: () -> Unit = {},
 ) {
-    composable(route = LoginRoute.route) {
+    composable(
+        route = loginRoute("{${IS_SIGNUP_SUCESS}}"),
+        arguments = listOf(
+            navArgument(IS_SIGNUP_SUCESS) {
+                type = NavType.StringType
+            },
+        ),
+    ) {
         LoginRoute(
             navigateHome = navigateHome,
-            navigateSignup = navigateSignup
+            navigateSignup = navigateSignup,
         )
     }
 }
 
 object LoginRoute {
     const val route = "login"
+    const val IS_SIGNUP_SUCESS = "isSignupSuccess"
+    fun loginRoute(isSignupSuccess: String) = "login/$isSignupSuccess"
 }
\ No newline at end of file