diff --git a/team1/src/main/java/com/example/demo/repository/EmployeeRepository.java b/team1/src/main/java/com/example/demo/repository/EmployeeRepository.java
index 9761b26..0baaa73 100644
--- a/team1/src/main/java/com/example/demo/repository/EmployeeRepository.java
+++ b/team1/src/main/java/com/example/demo/repository/EmployeeRepository.java
@@ -1,5 +1,7 @@
 package com.example.demo.repository;
 
+import java.util.Optional;
+
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
@@ -7,6 +9,8 @@ import com.example.demo.entity.EmployeeEntity;
 
 @Repository
 public interface EmployeeRepository extends JpaRepository<EmployeeEntity, Integer> {
-	
+
+	//メールアドレスとパスワードに合致するレコード
+	Optional<EmployeeEntity> findByMailAddressAndPassword(String mailAddress, String password);
 
 }
\ No newline at end of file
diff --git a/team1/src/main/java/com/example/demo/service/ReturnService.java b/team1/src/main/java/com/example/demo/service/ReturnService.java
index 2e9f0f0..145e562 100644
--- a/team1/src/main/java/com/example/demo/service/ReturnService.java
+++ b/team1/src/main/java/com/example/demo/service/ReturnService.java
@@ -11,6 +11,7 @@ import org.springframework.stereotype.Service;
 import com.example.demo.entity.Book_collectionEntity;
 import com.example.demo.entity.Borrow_booksEntity;
 import com.example.demo.form.LendingForm;
+import com.example.demo.form.LoginInfoForm;
 import com.example.demo.form.ReturnForm;
 import com.example.demo.form.SearchConditionBookForm;
 import com.example.demo.model.LeadingListModel;
@@ -176,4 +177,18 @@ public class ReturnService {
 
 	}
 
+	//メアドとパスワードが合っていればtureで返す
+	public boolean canlogin(String mail, String pass) {
+		if (mail == null || mail.isEmpty() || pass == null || pass.isEmpty()) {
+			return false;
+		}
+		return employeeRepository.findByMailAddressAndPassword(mail, pass).isPresent();
+	}
+
+	//LoginInfoFormの情報からidEmployeeを返す
+	public int getUserID(LoginInfoForm form) {
+		return employeeRepository.findByMailAddressAndPassword(form.getMailAddress(), form.getPassword()).get()
+				.getIdEmployee();
+	}
+
 }
\ No newline at end of file