diff --git a/user-service/src/main/java/com/justpickup/userservice/domain/user/dto/CustomerDto.java b/user-service/src/main/java/com/justpickup/userservice/domain/user/dto/CustomerDto.java
index ac60aa5..b129153 100644
--- a/user-service/src/main/java/com/justpickup/userservice/domain/user/dto/CustomerDto.java
+++ b/user-service/src/main/java/com/justpickup/userservice/domain/user/dto/CustomerDto.java
@@ -12,7 +12,7 @@ public class CustomerDto extends UserDto {
     }
 
     @Builder
-    public CustomerDto(Long id, String password, String name, String phoneNumber) {
-        super(id, password, name, phoneNumber);
+    public CustomerDto(Long id, String email, String password, String name, String phoneNumber, String dtype) {
+        super(id, email, password, name, phoneNumber, dtype);
     }
 }
diff --git a/user-service/src/main/java/com/justpickup/userservice/domain/user/dto/StoreOwnerDto.java b/user-service/src/main/java/com/justpickup/userservice/domain/user/dto/StoreOwnerDto.java
new file mode 100644
index 0000000..b5d2833
--- /dev/null
+++ b/user-service/src/main/java/com/justpickup/userservice/domain/user/dto/StoreOwnerDto.java
@@ -0,0 +1,16 @@
+package com.justpickup.userservice.domain.user.dto;
+
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+public class StoreOwnerDto extends UserDto {
+    private String businessNumber;
+
+    @Builder
+    public StoreOwnerDto(Long id, String email, String password, String name,
+                         String phoneNumber, String dtype, String businessNumber) {
+        super(id, email, password, name, phoneNumber, dtype);
+        this.businessNumber = businessNumber;
+    }
+}
diff --git a/user-service/src/main/java/com/justpickup/userservice/domain/user/dto/UserDto.java b/user-service/src/main/java/com/justpickup/userservice/domain/user/dto/UserDto.java
index 3fad831..32df2aa 100644
--- a/user-service/src/main/java/com/justpickup/userservice/domain/user/dto/UserDto.java
+++ b/user-service/src/main/java/com/justpickup/userservice/domain/user/dto/UserDto.java
@@ -1,15 +1,16 @@
 package com.justpickup.userservice.domain.user.dto;
 
 import com.justpickup.userservice.domain.user.entity.Customer;
-import lombok.Builder;
 import lombok.Getter;
 
 @Getter
-public class UserDto {
+public abstract class UserDto {
     private Long id;
+    private String email;
     private String password;
     private String name;
     private String phoneNumber;
+    private String dtype;
 
     // == 생성 메소드 == //
     public UserDto(Customer customer) {
@@ -19,10 +20,12 @@ public class UserDto {
         this.phoneNumber = customer.getPhoneNumber();
     }
 
-    public UserDto(Long id, String password, String name, String phoneNumber) {
+    public UserDto(Long id, String email, String password, String name, String phoneNumber, String dtype) {
         this.id = id;
+        this.email = email;
         this.password = password;
         this.name = name;
         this.phoneNumber = phoneNumber;
+        this.dtype = dtype;
     }
 }
diff --git a/user-service/src/main/java/com/justpickup/userservice/domain/user/entity/StoreOwner.java b/user-service/src/main/java/com/justpickup/userservice/domain/user/entity/StoreOwner.java
index 94510df..644d493 100644
--- a/user-service/src/main/java/com/justpickup/userservice/domain/user/entity/StoreOwner.java
+++ b/user-service/src/main/java/com/justpickup/userservice/domain/user/entity/StoreOwner.java
@@ -1,5 +1,6 @@
 package com.justpickup.userservice.domain.user.entity;
 
+import com.justpickup.userservice.domain.user.dto.StoreOwnerDto;
 import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
@@ -12,4 +13,9 @@ import javax.persistence.Table;
 @Getter @NoArgsConstructor(access = AccessLevel.PROTECTED)
 public class StoreOwner extends User {
     private String businessNumber;
+
+    public StoreOwner(String email, String password, String name, String phoneNumber, String businessNumber) {
+        super(email, password, name, phoneNumber);
+        this.businessNumber = businessNumber;
+    }
 }
diff --git a/user-service/src/main/java/com/justpickup/userservice/domain/user/entity/User.java b/user-service/src/main/java/com/justpickup/userservice/domain/user/entity/User.java
index 26b8a8b..a5f9b4c 100644
--- a/user-service/src/main/java/com/justpickup/userservice/domain/user/entity/User.java
+++ b/user-service/src/main/java/com/justpickup/userservice/domain/user/entity/User.java
@@ -12,15 +12,27 @@ import javax.persistence.*;
 @Inheritance(strategy = InheritanceType.JOINED)
 @DiscriminatorColumn(name = "DTYPE")
 @Getter @NoArgsConstructor(access = AccessLevel.PROTECTED)
-public class User extends BaseEntity {
+public abstract class User extends BaseEntity {
 
     @Id @GeneratedValue
     @Column(name = "user_id")
     private Long id;
 
+    private String email;
+
     private String password;
 
     private String name;
 
     private String phoneNumber;
+
+    @Column(insertable = false, updatable = false)
+    private String dtype;
+
+    public User(String email, String password, String name, String phoneNumber) {
+        this.email = email;
+        this.password = password;
+        this.name = name;
+        this.phoneNumber = phoneNumber;
+    }
 }
diff --git a/user-service/src/main/java/com/justpickup/userservice/domain/user/repository/UserRepository.java b/user-service/src/main/java/com/justpickup/userservice/domain/user/repository/UserRepository.java
new file mode 100644
index 0000000..4b8113c
--- /dev/null
+++ b/user-service/src/main/java/com/justpickup/userservice/domain/user/repository/UserRepository.java
@@ -0,0 +1,10 @@
+package com.justpickup.userservice.domain.user.repository;
+
+import com.justpickup.userservice.domain.user.entity.User;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+
+public interface UserRepository extends JpaRepository<User, Long> {
+    Optional<User> findByEmail(String username);
+}
diff --git a/user-service/src/main/java/com/justpickup/userservice/domain/user/service/UserService.java b/user-service/src/main/java/com/justpickup/userservice/domain/user/service/UserService.java
index b246962..1b41662 100644
--- a/user-service/src/main/java/com/justpickup/userservice/domain/user/service/UserService.java
+++ b/user-service/src/main/java/com/justpickup/userservice/domain/user/service/UserService.java
@@ -1,7 +1,10 @@
 package com.justpickup.userservice.domain.user.service;
 
 import com.justpickup.userservice.domain.user.dto.CustomerDto;
+import com.justpickup.userservice.domain.user.dto.StoreOwnerDto;
+import com.justpickup.userservice.domain.user.entity.StoreOwner;
 
 public interface UserService {
     CustomerDto findCustomerByUserId(Long userId);
+    StoreOwner saveStoreOwner(StoreOwnerDto storeOwnerDto);
 }
diff --git a/user-service/src/main/java/com/justpickup/userservice/domain/user/service/UserServiceImpl.java b/user-service/src/main/java/com/justpickup/userservice/domain/user/service/UserServiceImpl.java
index 9ddb80a..9e8f561 100644
--- a/user-service/src/main/java/com/justpickup/userservice/domain/user/service/UserServiceImpl.java
+++ b/user-service/src/main/java/com/justpickup/userservice/domain/user/service/UserServiceImpl.java
@@ -1,21 +1,45 @@
 package com.justpickup.userservice.domain.user.service;
 
 import com.justpickup.userservice.domain.user.dto.CustomerDto;
+import com.justpickup.userservice.domain.user.dto.StoreOwnerDto;
 import com.justpickup.userservice.domain.user.entity.Customer;
+import com.justpickup.userservice.domain.user.entity.StoreOwner;
+import com.justpickup.userservice.domain.user.entity.User;
 import com.justpickup.userservice.domain.user.exception.NotExistUserException;
 import com.justpickup.userservice.domain.user.repository.CustomerRepository;
+import com.justpickup.userservice.domain.user.repository.UserRepository;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
+import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.ArrayList;
+import java.util.Collection;
+
 @Service
 @RequiredArgsConstructor
 @Transactional(readOnly = true)
 @Slf4j
-public class UserServiceImpl implements UserService {
+public class UserServiceImpl implements UserService, UserDetailsService {
 
     private final CustomerRepository customerRepository;
+    private final UserRepository userRepository;
+    private final PasswordEncoder passwordEncoder;
+
+    @Override
+    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
+        User user = userRepository.findByEmail(username)
+                .orElseThrow(() -> new UsernameNotFoundException("User not found in the database"));
+
+        Collection<SimpleGrantedAuthority> authorities = new ArrayList<>();
+        authorities.add(new SimpleGrantedAuthority(user.getDtype()));
+        return new org.springframework.security.core.userdetails.User(user.getId().toString(), user.getPassword(), authorities);
+    }
 
     @Override
     public CustomerDto findCustomerByUserId(Long userId) {
@@ -24,4 +48,15 @@ public class UserServiceImpl implements UserService {
 
         return new CustomerDto(customer);
     }
+
+    @Override
+    @Transactional
+    public StoreOwner saveStoreOwner(StoreOwnerDto storeOwnerDto) {
+        String encode = passwordEncoder.encode(storeOwnerDto.getPassword());
+
+        StoreOwner storeOwner = new StoreOwner(storeOwnerDto.getEmail(), encode, storeOwnerDto.getName(),
+                storeOwnerDto.getPhoneNumber(), storeOwnerDto.getBusinessNumber());
+
+        return userRepository.save(storeOwner);
+    }
 }