diff --git a/core/domain/src/commonMain/kotlin/club/nito/core/domain/SignInUseCase.kt b/core/domain/src/commonMain/kotlin/club/nito/core/domain/SignInUseCase.kt
index c840fad0..aebc7295 100644
--- a/core/domain/src/commonMain/kotlin/club/nito/core/domain/SignInUseCase.kt
+++ b/core/domain/src/commonMain/kotlin/club/nito/core/domain/SignInUseCase.kt
@@ -1,19 +1,23 @@
 package club.nito.core.domain
 
 import club.nito.core.data.AuthRepository
+import club.nito.core.model.ExecuteResult
+import club.nito.core.model.runExecuting
 
 /**
  * 直近のスケジュールを取得するユースケース
  */
 sealed interface SignInUseCase {
-    suspend operator fun invoke(email: String, password: String)
+    suspend operator fun invoke(email: String, password: String): ExecuteResult<Unit>
 }
 
 class SignInExecutor(
     private val authRepository: AuthRepository,
 ) : SignInUseCase {
-    override suspend fun invoke(email: String, password: String) = authRepository.signIn(
-        email = email,
-        password = password,
-    )
+    override suspend fun invoke(email: String, password: String): ExecuteResult<Unit> = runExecuting {
+        authRepository.signIn(
+            email = email,
+            password = password,
+        )
+    }
 }
diff --git a/core/model/src/commonMain/kotlin/club/nito/core/model/ExecuteResult.kt b/core/model/src/commonMain/kotlin/club/nito/core/model/ExecuteResult.kt
index 76d8df04..dc722e5d 100644
--- a/core/model/src/commonMain/kotlin/club/nito/core/model/ExecuteResult.kt
+++ b/core/model/src/commonMain/kotlin/club/nito/core/model/ExecuteResult.kt
@@ -14,3 +14,9 @@ sealed interface ExecuteResult<out T> {
      */
     data class Failure(val error: NitoError?) : ExecuteResult<Nothing>
 }
+
+suspend fun <T> runExecuting(block: suspend () -> T): ExecuteResult<T> = try {
+    ExecuteResult.Success(block())
+} catch (e: Throwable) {
+    ExecuteResult.Failure(e.toNitoError())
+}
diff --git a/feature/auth/src/androidMain/kotlin/club/nito/feature/auth/SignInViewModel.kt b/feature/auth/src/androidMain/kotlin/club/nito/feature/auth/SignInViewModel.kt
index 33af1a83..bc092498 100644
--- a/feature/auth/src/androidMain/kotlin/club/nito/feature/auth/SignInViewModel.kt
+++ b/feature/auth/src/androidMain/kotlin/club/nito/feature/auth/SignInViewModel.kt
@@ -5,6 +5,7 @@ import androidx.lifecycle.viewModelScope
 import club.nito.core.domain.ObserveAuthStatusUseCase
 import club.nito.core.domain.SignInUseCase
 import club.nito.core.model.AuthStatus
+import club.nito.core.model.ExecuteResult
 import club.nito.core.model.FetchSingleResult
 import club.nito.core.ui.buildUiState
 import club.nito.core.ui.message.UserMessageStateHolder
@@ -65,7 +66,13 @@ class SignInViewModel @Inject constructor(
             when (intent) {
                 is SignInIntent.ChangeInputEmail -> email.emit(intent.email)
                 is SignInIntent.ChangeInputPassword -> password.emit(intent.password)
-                SignInIntent.ClickSignIn -> signInUseCase(email.value, password.value)
+                SignInIntent.ClickSignIn -> {
+                    val result = signInUseCase(email.value, password.value)
+                    if (result is ExecuteResult.Failure) {
+                        userMessageStateHolder.showMessage("ログインに失敗しました")
+                    }
+                }
+
                 SignInIntent.ClickRegister -> {}
             }
         }