diff --git a/app/src/main/java/com/sopt/geonppang/data/model/response/ResponseSignup.kt b/app/src/main/java/com/sopt/geonppang/data/model/response/ResponseSignup.kt
index 967c1f9d..140cfbff 100644
--- a/app/src/main/java/com/sopt/geonppang/data/model/response/ResponseSignup.kt
+++ b/app/src/main/java/com/sopt/geonppang/data/model/response/ResponseSignup.kt
@@ -18,6 +18,7 @@ data class ResponseSignup(
     )
 
     fun toSignUpInfo() = SignUpInfo(
+        memberId = data.memberId,
         role = data.role,
         type = data.type
     )
diff --git a/app/src/main/java/com/sopt/geonppang/domain/model/SignUpInfo.kt b/app/src/main/java/com/sopt/geonppang/domain/model/SignUpInfo.kt
index 7d53940f..92ea9192 100644
--- a/app/src/main/java/com/sopt/geonppang/domain/model/SignUpInfo.kt
+++ b/app/src/main/java/com/sopt/geonppang/domain/model/SignUpInfo.kt
@@ -1,6 +1,7 @@
 package com.sopt.geonppang.domain.model
 
 data class SignUpInfo(
+    val memberId: Int,
     val role: String,
     val type: String,
 )
diff --git a/app/src/main/java/com/sopt/geonppang/presentation/auth/AuthViewModel.kt b/app/src/main/java/com/sopt/geonppang/presentation/auth/AuthViewModel.kt
index cc17e6a5..d7dc02a9 100644
--- a/app/src/main/java/com/sopt/geonppang/presentation/auth/AuthViewModel.kt
+++ b/app/src/main/java/com/sopt/geonppang/presentation/auth/AuthViewModel.kt
@@ -35,9 +35,8 @@ class AuthViewModel @Inject constructor(
     val passwordCheck = MutableStateFlow("")
 
     val nickname = MutableStateFlow("")
-
-    private val _flag = MutableStateFlow("")
-    val flag get() = _flag
+    private val _memberId = MutableStateFlow<Int?>(null)
+    val memberId get() = _memberId.asStateFlow()
 
     private val _authRoleType = MutableStateFlow<AuthRoleType?>(null)
     val authRoleType get() = _authRoleType.asStateFlow()
@@ -159,6 +158,9 @@ class AuthViewModel @Inject constructor(
                         gpDataSource.refreshToken = BEARER_PREFIX + refreshToken
                     }
                     _signUpState.value = UiState.Success(true)
+                    if (platformType == PlatformType.NONE) {
+                        _memberId.value = responseBody?.memberId
+                    }
                 }
                 .onFailure { throwable ->
                     Timber.e(throwable.message)
@@ -172,6 +174,7 @@ class AuthViewModel @Inject constructor(
                 authRepository.settingNickname(RequestNicknameSetting(nickname))
                     .onSuccess { response ->
                         val responseHeader = response.headers()
+                        val responseBody = response.body()
                         val accessToken = responseHeader[AUTHORIZATION].toString()
                         val refreshToken = responseHeader[AUTHORIZATION_REFRESH].toString()
                         gpDataSource.accessToken = BEARER_PREFIX + accessToken
@@ -180,6 +183,7 @@ class AuthViewModel @Inject constructor(
                         _signUpState.value = UiState.Success(true)
                         // 소셜 회원가입 시 자동 로그인 설정
                         setAutoLogin()
+                        _memberId.value = responseBody?.data?.memberId
                     }
                     .onFailure { throwable ->
                         Timber.e(throwable.message)
diff --git a/app/src/main/java/com/sopt/geonppang/presentation/auth/SignActivity.kt b/app/src/main/java/com/sopt/geonppang/presentation/auth/SignActivity.kt
index 58414686..88d141a1 100644
--- a/app/src/main/java/com/sopt/geonppang/presentation/auth/SignActivity.kt
+++ b/app/src/main/java/com/sopt/geonppang/presentation/auth/SignActivity.kt
@@ -55,6 +55,7 @@ class SignActivity :
 
                 AuthRoleType.USER -> {
                     authViewModel.setAutoLogin()
+                    AmplitudeUtils.trackEvent(LOGIN_APP)
                     moveToMain()
                 }
 
@@ -89,5 +90,6 @@ class SignActivity :
         const val SIGNUP_TYPE = "signup type"
         const val EMAIL = "EMAIL"
         const val KAKAO = "KAKAO"
+        const val LOGIN_APP = "login_app"
     }
 }
diff --git a/app/src/main/java/com/sopt/geonppang/presentation/auth/SignUpActivity.kt b/app/src/main/java/com/sopt/geonppang/presentation/auth/SignUpActivity.kt
index 8de7d798..834ee43e 100644
--- a/app/src/main/java/com/sopt/geonppang/presentation/auth/SignUpActivity.kt
+++ b/app/src/main/java/com/sopt/geonppang/presentation/auth/SignUpActivity.kt
@@ -20,7 +20,6 @@ import kotlinx.coroutines.flow.onEach
 class SignUpActivity :
     BindingActivity<ActivitySignupBinding>(R.layout.activity_signup) {
     private val viewModel: AuthViewModel by viewModels()
-    private var flag = false
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -75,7 +74,6 @@ class SignUpActivity :
                         )
                         tvEmailErrorMsg.text = getString(R.string.email_validate_to_use)
                         tvEmailErrorMsg.visibility = View.VISIBLE
-                        flag = true
                     }
                 }
 
diff --git a/app/src/main/java/com/sopt/geonppang/presentation/auth/SignUpNicknameActivity.kt b/app/src/main/java/com/sopt/geonppang/presentation/auth/SignUpNicknameActivity.kt
index f34312db..47db7b6c 100644
--- a/app/src/main/java/com/sopt/geonppang/presentation/auth/SignUpNicknameActivity.kt
+++ b/app/src/main/java/com/sopt/geonppang/presentation/auth/SignUpNicknameActivity.kt
@@ -82,6 +82,9 @@ class SignUpNicknameActivity :
                 viewModel.initNickname()
             }
         }.launchIn(lifecycleScope)
+        viewModel.memberId.flowWithLifecycle(lifecycle).onEach { memberId ->
+            AmplitudeUtils.setUserId(GUNBBANG + memberId)
+        }.launchIn(lifecycleScope)
     }
 
     private fun completeSignUp() {
@@ -125,5 +128,6 @@ class SignUpNicknameActivity :
         const val PASSWORD = "password"
         const val COMPLETE_NICKNAME = "complete_nickname"
         const val COMPLETE_SIGNUP = "complete_signup"
+        const val GUNBBANG = "gunbbang"
     }
 }
diff --git a/app/src/main/java/com/sopt/geonppang/util/AmplitudeUtils.kt b/app/src/main/java/com/sopt/geonppang/util/AmplitudeUtils.kt
index 155e7203..e5252f5c 100644
--- a/app/src/main/java/com/sopt/geonppang/util/AmplitudeUtils.kt
+++ b/app/src/main/java/com/sopt/geonppang/util/AmplitudeUtils.kt
@@ -30,4 +30,8 @@ object AmplitudeUtils {
     fun trackEventWithMapProperties(eventName: String, properties: Map<String, Any>) {
         amplitude.track(eventName, properties)
     }
+
+    fun setUserId(userId: String) {
+        amplitude.setUserId(userId)
+    }
 }