diff --git a/build.gradle b/build.gradle
index 598523e..73ae56b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -37,13 +37,23 @@ dependencies {
 
 	// AWS S3
 	implementation 'org.springframework.cloud:spring-cloud-starter-aws:2.2.6.RELEASE'
-	
+
+	// Mail
+	implementation 'com.sun.mail:jakarta.mail:2.0.1'
+	implementation 'javax.activation:activation:1.1.1'
+	implementation 'org.springframework.boot:spring-boot-starter-mail'
+	implementation group: 'jakarta.mail', name: 'jakarta.mail-api', version: '2.1.3'
+
+
 	compileOnly 'org.projectlombok:lombok'
 	implementation 'org.postgresql:postgresql:42.7.3'
 	runtimeOnly 'com.mysql:mysql-connector-j'
 	annotationProcessor 'org.projectlombok:lombok'
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+
+	implementation 'javax.xml.bind:jaxb-api:2.3.1'
+	implementation 'org.glassfish.jaxb:jaxb-runtime:2.3.1'
 }
 
 tasks.named('test') {
diff --git a/src/main/java/dgu/aecofarm/domain/email/service/EmailService.java b/src/main/java/dgu/aecofarm/domain/email/service/EmailService.java
new file mode 100644
index 0000000..41e7b1f
--- /dev/null
+++ b/src/main/java/dgu/aecofarm/domain/email/service/EmailService.java
@@ -0,0 +1,8 @@
+package dgu.aecofarm.domain.email.service;
+
+import dgu.aecofarm.entity.EmailMessage;
+
+public interface EmailService {
+    void sendAuthCode(String email, String authCode);
+}
+
diff --git a/src/main/java/dgu/aecofarm/domain/email/service/EmailServiceImpl.java b/src/main/java/dgu/aecofarm/domain/email/service/EmailServiceImpl.java
new file mode 100644
index 0000000..7035bee
--- /dev/null
+++ b/src/main/java/dgu/aecofarm/domain/email/service/EmailServiceImpl.java
@@ -0,0 +1,32 @@
+package dgu.aecofarm.domain.email.service;
+
+import jakarta.mail.internet.MimeMessage;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.mail.javamail.MimeMessageHelper;
+import org.springframework.stereotype.Service;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class EmailServiceImpl implements EmailService {
+
+    private final JavaMailSender javaMailSender;
+
+    @Override
+    public void sendAuthCode(String email, String authCode) {
+        try {
+            MimeMessage mimeMessage = javaMailSender.createMimeMessage();
+            MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage, false, "UTF-8");
+            mimeMessageHelper.setTo(email);
+            mimeMessageHelper.setSubject("[AECOfarm] Email Verification Code");
+            mimeMessageHelper.setText("Your verification code is: " + authCode, false);  // HTML이 아니라면 false로 설정
+            javaMailSender.send(mimeMessage);
+            log.info("Auth code sent to email: " + email);
+        } catch (jakarta.mail.MessagingException e) {
+            log.error("Failed to send auth code to email: " + email, e);
+            throw new RuntimeException("Failed to send auth code", e);
+        }
+    }
+}
diff --git a/src/main/java/dgu/aecofarm/domain/email/service/UserService.java b/src/main/java/dgu/aecofarm/domain/email/service/UserService.java
new file mode 100644
index 0000000..425abd5
--- /dev/null
+++ b/src/main/java/dgu/aecofarm/domain/email/service/UserService.java
@@ -0,0 +1,41 @@
+package dgu.aecofarm.domain.email.service;
+
+import dgu.aecofarm.entity.Member;
+import dgu.aecofarm.repository.MemberRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+import java.util.Optional;
+
+@Service
+@RequiredArgsConstructor
+public class UserService {
+    private final MemberRepository memberRepository;
+
+    // 임시 비밀번호를 설정하는 메서드
+    public void setTempPassword(String email, String tempPassword) {
+        Optional<Member> optionalMember = memberRepository.findMemberByEmail(email);
+        if (!optionalMember.isPresent()) {
+            throw new IllegalArgumentException("유효한 이메일이 아닙니다.");
+        }
+        Member member = optionalMember.get();
+        member.updatePassword(tempPassword);
+        memberRepository.save(member);
+    }
+
+    // 사용자 정보 조회 메서드
+    public Optional<Member> getMemberByEmail(String email) {
+        return memberRepository.findMemberByEmail(email);
+    }
+
+    // 사용자 비밀번호 재설정 메서드
+    public void resetPassword(String email, String newPassword) {
+        Optional<Member> optionalMember = memberRepository.findMemberByEmail(email);
+        if (!optionalMember.isPresent()) {
+            throw new IllegalArgumentException("유효한 이메일이 아닙니다.");
+        }
+        Member member = optionalMember.get();
+        member.updatePassword(newPassword);
+        memberRepository.save(member);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/dgu/aecofarm/domain/member/controller/MemberController.java b/src/main/java/dgu/aecofarm/domain/member/controller/MemberController.java
index 398f16f..9d06f36 100644
--- a/src/main/java/dgu/aecofarm/domain/member/controller/MemberController.java
+++ b/src/main/java/dgu/aecofarm/domain/member/controller/MemberController.java
@@ -2,6 +2,7 @@
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 import dgu.aecofarm.domain.member.service.MemberService;
+import dgu.aecofarm.dto.email.EmailResponseDto;
 import dgu.aecofarm.dto.member.*;
 import dgu.aecofarm.entity.Member;
 import dgu.aecofarm.entity.Response;
@@ -28,12 +29,24 @@ public Response<?> signup(@RequestPart("signupData") SignupRequestDTO signupRequ
                               @RequestPart("file") MultipartFile file) {
         try {
             String imageUrl = memberService.uploadFile(file);
-            return Response.success(memberService.signup(signupRequestDTO, imageUrl));
+            SignupResponseDTO signupResponseDTO = memberService.initiateSignup(signupRequestDTO, imageUrl);
+            signupResponseDTO.getSignupRequestDTO().setImageUrl(imageUrl);
+            return Response.success(signupResponseDTO);
+        } catch (Exception e) {
+            return Response.failure(e);
+        }
+    }
+    @PostMapping("/signup/complete")
+    public Response<?> completeSignup(@RequestBody SignupCompleteDTO signupCompleteDTO) {
+        try {
+            return Response.success(memberService.completeSignup(signupCompleteDTO.getSignupRequestDTO(),
+                    signupCompleteDTO.getAuthCode(),
+                    signupCompleteDTO.getExpectedCode(),
+                    signupCompleteDTO.getSignupRequestDTO().getImageUrl()));
         } catch (Exception e) {
             return Response.failure(e);
         }
     }
-
     @PostMapping("/login")
     public Response<?> login(@RequestBody LoginRequestDTO loginRequestDTO) {
         try {
diff --git a/src/main/java/dgu/aecofarm/domain/member/service/MemberService.java b/src/main/java/dgu/aecofarm/domain/member/service/MemberService.java
index 7bf7aba..d1daf44 100644
--- a/src/main/java/dgu/aecofarm/domain/member/service/MemberService.java
+++ b/src/main/java/dgu/aecofarm/domain/member/service/MemberService.java
@@ -7,7 +7,9 @@
 import java.util.Optional;
 
 public interface MemberService {
-    String signup(SignupRequestDTO registerRequestDTO, String imageUrl);
+    SignupResponseDTO initiateSignup(SignupRequestDTO signupRequestDTO, String imageUrl);
+
+    String completeSignup(SignupRequestDTO signupRequestDTO, String authCode, String expectedCode, String imageUrl);
 
     String uploadFile(MultipartFile file);
 
diff --git a/src/main/java/dgu/aecofarm/domain/member/service/MemberServiceImpl.java b/src/main/java/dgu/aecofarm/domain/member/service/MemberServiceImpl.java
index 1841aca..f278807 100644
--- a/src/main/java/dgu/aecofarm/domain/member/service/MemberServiceImpl.java
+++ b/src/main/java/dgu/aecofarm/domain/member/service/MemberServiceImpl.java
@@ -4,6 +4,7 @@
 import com.amazonaws.services.s3.model.CannedAccessControlList;
 import com.amazonaws.services.s3.model.ObjectMetadata;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import dgu.aecofarm.domain.email.service.EmailService;
 import dgu.aecofarm.dto.member.*;
 import dgu.aecofarm.entity.*;
 import dgu.aecofarm.exception.InvalidUserIdException;
@@ -35,6 +36,7 @@
 public class MemberServiceImpl implements MemberService {
 
     private final MemberRepository memberRepository;
+    private final EmailService emailService;
     private final ItemRepository itemRepository;
     private final ObjectMapper objectMapper;
     private final ContractRepository contractRepository;
@@ -45,24 +47,34 @@ public class MemberServiceImpl implements MemberService {
     @Value("${cloud.aws.s3.bucket}")
     private String bucketName;
 
-    public String signup(SignupRequestDTO signupRequestDTO, String imageUrl) {
-        String email = signupRequestDTO.getEmail();
-        String userName = signupRequestDTO.getUserName();
-        String password = toSHA256(signupRequestDTO.getPassword());
-        String phone = signupRequestDTO.getPhone();
-        int schoolNum = signupRequestDTO.getSchoolNum();
-
-        Member checkDuplicate = memberRepository.findMemberByEmail(email);
-        if (checkDuplicate != null) {
+    @Override
+    public SignupResponseDTO initiateSignup(SignupRequestDTO signupRequestDTO, String imageUrl) {
+        Optional<Member> checkDuplicate = memberRepository.findMemberByEmail(signupRequestDTO.getEmail());
+        if (checkDuplicate.isPresent()) {
             throw new IllegalArgumentException("중복된 이메일입니다.");
         }
 
+        String authCode = generateAuthCode();
+        emailService.sendAuthCode(signupRequestDTO.getEmail(), authCode);
+
+        return SignupResponseDTO.builder()
+                .signupRequestDTO(signupRequestDTO)
+                .expectedCode(authCode)
+                .build();
+    }
+
+    @Override
+    public String completeSignup(SignupRequestDTO signupRequestDTO, String authCode, String expectedCode, String imageUrl) {
+        if (!authCode.equals(expectedCode)) {
+            throw new IllegalArgumentException("인증 코드가 일치하지 않습니다.");
+        }
+
         Member member = Member.builder()
-                .email(email)
-                .userName(userName)
-                .password(password)
-                .phone(phone)
-                .schoolNum(schoolNum)
+                .email(signupRequestDTO.getEmail())
+                .userName(signupRequestDTO.getUserName())
+                .password(toSHA256(signupRequestDTO.getPassword()))
+                .phone(signupRequestDTO.getPhone())
+                .schoolNum(signupRequestDTO.getSchoolNum())
                 .image(imageUrl)
                 .point(3000)
                 .build();
@@ -73,6 +85,7 @@ public String signup(SignupRequestDTO signupRequestDTO, String imageUrl) {
         return "회원가입 성공";
     }
 
+    @Override
     public String uploadFile(MultipartFile file) {
         if (file.isEmpty()) {
             return null;
@@ -94,12 +107,14 @@ public String uploadFile(MultipartFile file) {
         }
     }
 
+    @Override
     public LoginResponseDTO login(LoginRequestDTO loginRequestDTO) {
-        Member member = memberRepository.findMemberByEmail(loginRequestDTO.getEmail());
-        if (member == null) {
+        Optional<Member> optionalMember = memberRepository.findMemberByEmail(loginRequestDTO.getEmail());
+        if (!optionalMember.isPresent()) {
             throw new IllegalArgumentException("유효한 이메일이 아닙니다.");
         }
 
+        Member member = optionalMember.get();
         String encode_password = toSHA256(loginRequestDTO.getPassword());
 
         if (encode_password.equals(member.getPassword())) {
@@ -111,13 +126,13 @@ public LoginResponseDTO login(LoginRequestDTO loginRequestDTO) {
         }
         throw new IllegalArgumentException("비밀번호가 틀립니다.");
     }
-
     // Jwt Token에서 추출한 loginId로 Member 찾아오기
+    @Override
     public Optional<Member> getLoginUserInfoByMemberId(String memberId) {
         return memberRepository.findByMemberId(Long.valueOf(memberId));
     }
-
     // 로그인한 Member 조회
+    @Override
     public Optional<JwtInfoResponseDTO> getLoginUserInfoByUserid(String memberId) {
         return memberRepository.findByMemberId(Long.valueOf(memberId)).map(member ->
                 JwtInfoResponseDTO.builder()
@@ -126,28 +141,27 @@ public Optional<JwtInfoResponseDTO> getLoginUserInfoByUserid(String memberId) {
                         .build());
     }
 
+    @Override
     public String findPassword(FindPasswordRequestDTO findPasswordDTO) {
-        // memberId로 회원 정보 조회
-        Member member = memberRepository.findMemberByEmail(findPasswordDTO.getEmail());
-
-        if (member == null) {
+        Optional<Member> optionalMember = memberRepository.findMemberByEmail(findPasswordDTO.getEmail());
+        if (!optionalMember.isPresent()) {
             throw new IllegalArgumentException("유효한 이메일이 아닙니다.");
-        }
+        }// 사용자 이름과 학번이 일치하는지 확인
+        Member member = optionalMember.get();
 
         // 사용자 이름과 학번이 일치하는지 확인
         if (!member.getUserName().equals(findPasswordDTO.getUserName()) || member.getSchoolNum() != findPasswordDTO.getSchoolNum()) {
             throw new IllegalArgumentException("사용자 정보가 일치하지 않습니다.");
         }
-
         // 비밀번호 재설정
         String newPassword = toSHA256(findPasswordDTO.getPassword());
         member.updatePassword(newPassword);
         memberRepository.save(member);
 
         return "비밀번호 재설정에 성공하였습니다.";
-
     }
 
+    @Override
     public String signout(String memberId) {
         Member member = memberRepository.findById(Long.valueOf(memberId))
                 .orElseThrow(() -> new IllegalArgumentException("유효한 사용자 ID가 아닙니다."));
@@ -160,24 +174,7 @@ public String signout(String memberId) {
         return "회원 탈퇴에 성공하였습니다.";
     }
 
-    private String toSHA256(String base) {
-        try {
-            MessageDigest digest = MessageDigest.getInstance("SHA-256");
-            byte[] hash = digest.digest(base.getBytes("UTF-8"));
-            StringBuilder hexString = new StringBuilder();
-
-            for (int i = 0; i < hash.length; i++) {
-                String hex = Integer.toHexString(0xff & hash[i]);
-                if(hex.length() == 1) hexString.append('0');
-                hexString.append(hex);
-            }
-
-            return hexString.toString();
-        } catch(NoSuchAlgorithmException | UnsupportedEncodingException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
+    @Override
     public RecommendResponseDTO getRecommand(String memberId) {
         Member member = memberRepository.findById(Long.valueOf(memberId))
                 .orElseThrow(() -> new InvalidUserIdException("유효한 사용자 ID가 아닙니다."));
@@ -226,6 +223,7 @@ public RecommendResponseDTO getRecommand(String memberId) {
                 .build();
     }
 
+    @Override
     public SearchResponseDTO searchItems(SearchRequestDTO searchRequestDTO, String memberId) {
         Member member = memberRepository.findById(Long.valueOf(memberId))
                 .orElseThrow(() -> new InvalidUserIdException("유효한 사용자 ID가 아닙니다."));
@@ -290,4 +288,26 @@ public SearchResponseDTO searchItems(SearchRequestDTO searchRequestDTO, String m
                 .borrowItems(borrowItems)
                 .build();
     }
+
+    private String generateAuthCode() {
+        return UUID.randomUUID().toString().replaceAll("-", "").substring(0, 8);
+    }
+
+    private String toSHA256(String base) {
+        try {
+            MessageDigest digest = MessageDigest.getInstance("SHA-256");
+            byte[] hash = digest.digest(base.getBytes("UTF-8"));
+            StringBuilder hexString = new StringBuilder();
+
+            for (int i = 0; i < hash.length; i++) {
+                String hex = Integer.toHexString(0xff & hash[i]);
+                if (hex.length() == 1) hexString.append('0');
+                hexString.append(hex);
+            }
+
+            return hexString.toString();
+        } catch (NoSuchAlgorithmException | UnsupportedEncodingException e) {
+            throw new RuntimeException(e);
+        }
+    }
 }
diff --git a/src/main/java/dgu/aecofarm/dto/email/EmailPostDto.java b/src/main/java/dgu/aecofarm/dto/email/EmailPostDto.java
new file mode 100644
index 0000000..0fc2097
--- /dev/null
+++ b/src/main/java/dgu/aecofarm/dto/email/EmailPostDto.java
@@ -0,0 +1,8 @@
+package dgu.aecofarm.dto.email;
+
+import lombok.Getter;
+
+@Getter
+public class EmailPostDto {
+    private String email;
+}
diff --git a/src/main/java/dgu/aecofarm/dto/email/EmailResponseDto.java b/src/main/java/dgu/aecofarm/dto/email/EmailResponseDto.java
new file mode 100644
index 0000000..ef8e0ea
--- /dev/null
+++ b/src/main/java/dgu/aecofarm/dto/email/EmailResponseDto.java
@@ -0,0 +1,10 @@
+package dgu.aecofarm.dto.email;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class EmailResponseDto {
+    private String code;
+}
diff --git a/src/main/java/dgu/aecofarm/dto/member/SignupCompleteDTO.java b/src/main/java/dgu/aecofarm/dto/member/SignupCompleteDTO.java
new file mode 100644
index 0000000..954c26b
--- /dev/null
+++ b/src/main/java/dgu/aecofarm/dto/member/SignupCompleteDTO.java
@@ -0,0 +1,12 @@
+package dgu.aecofarm.dto.member;
+
+import lombok.Builder;
+import lombok.Data;
+
+@Data
+@Builder
+public class SignupCompleteDTO {
+    private SignupRequestDTO signupRequestDTO;
+    private String authCode;
+    private String expectedCode;
+}
diff --git a/src/main/java/dgu/aecofarm/dto/member/SignupRequestDTO.java b/src/main/java/dgu/aecofarm/dto/member/SignupRequestDTO.java
index 0488ac1..f27f28d 100644
--- a/src/main/java/dgu/aecofarm/dto/member/SignupRequestDTO.java
+++ b/src/main/java/dgu/aecofarm/dto/member/SignupRequestDTO.java
@@ -1,12 +1,15 @@
 package dgu.aecofarm.dto.member;
 
+import lombok.Builder;
 import lombok.Data;
 
 @Data
+@Builder
 public class SignupRequestDTO {
     private String email;
     private String userName;
     private String password;
     private String phone;
     private int schoolNum;
+    private String imageUrl;
 }
diff --git a/src/main/java/dgu/aecofarm/dto/member/SignupResponseDTO.java b/src/main/java/dgu/aecofarm/dto/member/SignupResponseDTO.java
new file mode 100644
index 0000000..de61f22
--- /dev/null
+++ b/src/main/java/dgu/aecofarm/dto/member/SignupResponseDTO.java
@@ -0,0 +1,11 @@
+package dgu.aecofarm.dto.member;
+
+import lombok.Builder;
+import lombok.Data;
+
+@Data
+@Builder
+public class SignupResponseDTO {
+    private SignupRequestDTO signupRequestDTO;
+    private String expectedCode;
+}
\ No newline at end of file
diff --git a/src/main/java/dgu/aecofarm/entity/EmailMessage.java b/src/main/java/dgu/aecofarm/entity/EmailMessage.java
new file mode 100644
index 0000000..04c9fdc
--- /dev/null
+++ b/src/main/java/dgu/aecofarm/entity/EmailMessage.java
@@ -0,0 +1,15 @@
+package dgu.aecofarm.entity;
+
+import lombok.Builder;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+@Builder
+public class EmailMessage {
+
+    private String to;
+    private String subject;
+    private String message;
+}
diff --git a/src/main/java/dgu/aecofarm/repository/MemberRepository.java b/src/main/java/dgu/aecofarm/repository/MemberRepository.java
index eb2043c..41f707c 100644
--- a/src/main/java/dgu/aecofarm/repository/MemberRepository.java
+++ b/src/main/java/dgu/aecofarm/repository/MemberRepository.java
@@ -8,7 +8,7 @@
 
 @Repository
 public interface MemberRepository extends JpaRepository<Member, Long> {
-    Member findMemberByEmail(String email);
+    Optional<Member> findMemberByEmail(String email);
 
     Optional<Member> findByMemberId(Long memberId);
 }
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 7d5f86f..cff9e83 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -13,6 +13,20 @@ spring:
     username: ${DB_USER_NAME}
     password: ${DB_PASSWORD}
 
+  mail:
+    host: ${MAIL_HOST}
+    port: ${MAIL_PORT}
+    username: ${MAIL_USERNAME}
+    password: ${MAIL_PASSWORD}
+    properties:
+      mail:
+        smtp:
+          auth: true
+          timeout: 5000
+          starttls:
+            enable: true
+          debug: true
+
 cloud:
   aws:
     s3:
@@ -23,4 +37,4 @@ cloud:
     region:
       static: ap-northeast-2
     stack:
-      auto: false
\ No newline at end of file
+      auto: false
diff --git a/src/main/resources/templates/email.html b/src/main/resources/templates/email.html
new file mode 100644
index 0000000..ab3467b
--- /dev/null
+++ b/src/main/resources/templates/email.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+
+<body>
+<div style="margin:100px;">
+    <h1> 안녕하세요.</h1>
+    <h1> 대학생을 위한 물품 대여 플랫폼 aecofarm 입니다.</h1>
+    <br>
+    <p> 아래 코드를 회원가입 창으로 돌아가 입력해주세요.</p>
+    <br>
+
+    <div align="center" style="border:1px solid black; font-family:verdana;">
+        <h3 style="color:blue"> 회원가입 인증 코드 입니다. </h3>
+        <div style="font-size:130%" th:text="${code}"> </div>
+    </div>
+    <br/>
+</div>
+
+</body>
+</html>
\ No newline at end of file
diff --git a/src/main/resources/templates/password.html b/src/main/resources/templates/password.html
new file mode 100644
index 0000000..bfbd8ca
--- /dev/null
+++ b/src/main/resources/templates/password.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+
+<body>
+<div style="margin:100px;">
+    <h1> 안녕하세요.</h1>
+    <h1> 대학생을 위한 물품 대여 플랫폼 aecofarm 입니다.</h1>
+    <br>
+    <p> 임시 비밀번호를 발급드립니다. 아래 발급된 비밀번호로 로그인해주세요. </p>
+    <br>
+
+    <div align="center" style="border:1px solid black; font-family:verdana;">
+        <h3 style="color:blue"> 임시 비밀번호 입니다. </h3>
+        <div style="font-size:130%" th:text="${code}"> </div>
+    </div>
+    <br/>
+</div>
+
+
+</body>
+</html>
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