diff --git a/src/main/java/com/wooyeon/yeon/user/controller/UserController.java b/src/main/java/com/wooyeon/yeon/user/controller/UserController.java
index 519724b..cc46778 100644
--- a/src/main/java/com/wooyeon/yeon/user/controller/UserController.java
+++ b/src/main/java/com/wooyeon/yeon/user/controller/UserController.java
@@ -48,7 +48,6 @@ public SseEmitter sendEmailVerify(@RequestBody EmailRequestDto emailRequestDto)
         try {
             emitter.send(SseEmitter.event().name("INIT").data("SSE Connected"));
             emitter.send(SseEmitter.event().data(emailResponseDto));
-            log.debug("[Controller] emailResponseDto: {}", emailResponseDto);
         } catch (IOException e) {
             emitter.completeWithError(e);
         }
diff --git a/src/main/java/com/wooyeon/yeon/user/repository/EmailAuthRepository.java b/src/main/java/com/wooyeon/yeon/user/repository/EmailAuthRepository.java
index 449ad18..671b2ae 100644
--- a/src/main/java/com/wooyeon/yeon/user/repository/EmailAuthRepository.java
+++ b/src/main/java/com/wooyeon/yeon/user/repository/EmailAuthRepository.java
@@ -9,12 +9,13 @@
 
 import javax.transaction.Transactional;
 import java.time.LocalDateTime;
+import java.util.Optional;
 
 @Repository
 public interface EmailAuthRepository extends JpaRepository<EmailAuth, Long> {
     boolean existsByEmail(String email);
 
-    EmailAuth findEmailAuthByEmail(String email);
+    // EmailAuth findEmailAuthByEmail(String email);
 
     EmailAuth findEmailAuthByEmailAndAuthToken(String email, String authToken);
 
@@ -23,6 +24,6 @@ public interface EmailAuthRepository extends JpaRepository<EmailAuth, Long> {
     @Query("DELETE FROM EmailAuth e WHERE e.expireDate < :currentDateTime AND e.certification = false")
     void deleteExpiredRecords(@Param("currentDateTime") LocalDateTime currentDateTime);
 
-
+    Optional<EmailAuth> findEmailAuthByEmail(String email);
 }
 
diff --git a/src/main/java/com/wooyeon/yeon/user/service/EmailAuthService.java b/src/main/java/com/wooyeon/yeon/user/service/EmailAuthService.java
index 32e55a2..7668cf2 100644
--- a/src/main/java/com/wooyeon/yeon/user/service/EmailAuthService.java
+++ b/src/main/java/com/wooyeon/yeon/user/service/EmailAuthService.java
@@ -23,6 +23,7 @@
 import javax.mail.internet.MimeMessage;
 import java.time.LocalDateTime;
 import java.util.Base64;
+import java.util.Optional;
 import java.util.UUID;
 
 @PropertySource("classpath:application-apikey.properties")
@@ -49,19 +50,33 @@ public EmailResponseDto sendEmail(EmailRequestDto emailRequestDto) throws Messag
         // 이메일 중복 확인 로직 추가
         if (validateDuplicated(emailRequestDto.getEmail())) {
 
-            log.debug(emailRequestDto.getEmail()+" certification: {}", emailAuthRepository.findEmailAuthByEmail(emailRequestDto.getEmail()).isCertification());
-
             EmailResponseDto emailResponseDto = EmailResponseDto.builder()
                     .statusCode(HttpStatus.SC_OK) // 오류코드 대신 200 부탁함
                     .email(emailRequestDto.getEmail())
                     .build();
-
+            /*
+            // 해당 이메일이 이미 인증된 이메일인지?
             if (emailAuthRepository.findEmailAuthByEmail(emailRequestDto.getEmail()).isCertification()) {
+
+                if(userRepository.findByEmail(emailRequestDto.getEmail())!=null) {
+                    emailResponseDto.updateStatusName("ExistsUser");
+                }
                 emailResponseDto.updateStatusName("completed");
             } else {
                 emailResponseDto.updateStatusName("duplicated");
             }
-            log.debug("emailResponseDto 이미 있음 : {}", emailResponseDto);
+             */
+            Optional<EmailAuth> emailAuthOptional = emailAuthRepository.findEmailAuthByEmail(emailRequestDto.getEmail());
+            if (emailAuthOptional.isPresent() && emailAuthOptional.get().isCertification()) {
+                // 해당 이메일이 이미 인증된 경우
+                if (userRepository.findByEmail(emailRequestDto.getEmail()) != null) {
+                    emailResponseDto.updateStatusName("ExistsUser");
+                } else {
+                    emailResponseDto.updateStatusName("completed");
+                }
+            } else {
+                emailResponseDto.updateStatusName("duplicated");
+            }
             return emailResponseDto;
         } else {
             // 이메일 인증 링크 발송
diff --git a/src/main/java/com/wooyeon/yeon/user/service/UserService.java b/src/main/java/com/wooyeon/yeon/user/service/UserService.java
index ce30299..29ee96a 100644
--- a/src/main/java/com/wooyeon/yeon/user/service/UserService.java
+++ b/src/main/java/com/wooyeon/yeon/user/service/UserService.java
@@ -85,11 +85,13 @@ public PasswordEncryptResponseDto decodeEncrypt(PasswordEncryptRequestDto passwo
         String decodedPassword = aesUtil.decrypt(passwordEncryptRequestDto.getEncryptedPassword(), decodedKey, ivBytes);
         log.debug("AES로 복호화한 원문 : {}", decodedPassword);
 
-//        비밀번호 + salt를 SHA256으로 암호화
-//        String salt = createSalt();
-//        String password = decodedPassword+salt;
-//          log.info("salt : {}", salt);
-//          log.info("finalPassword : {}", finalPassword);
+        /*
+        비밀번호 + salt를 SHA256으로 암호화
+        String salt = createSalt();
+        String password = decodedPassword+salt;
+          log.info("salt : {}", salt);
+          log.info("finalPassword : {}", finalPassword);
+        */
 
         // passwordEncoder로 비밀번호 암호화 (2024.02.06 로그인과 암호화 방식 맞춤 수정)
         String finalPassword = passwordEncoder.encode(decodedPassword);
diff --git a/src/main/java/com/wooyeon/yeon/user/service/encrypt/AesUtil.java b/src/main/java/com/wooyeon/yeon/user/service/encrypt/AesUtil.java
index f1cd268..e21e0bd 100644
--- a/src/main/java/com/wooyeon/yeon/user/service/encrypt/AesUtil.java
+++ b/src/main/java/com/wooyeon/yeon/user/service/encrypt/AesUtil.java
@@ -29,7 +29,7 @@ public static String decrypt(String ciphertext, byte[] aesKeyBytes, byte[] ivByt
         // 복호화 수행
         byte[] decryptedBytes = cipher.doFinal(encryptedBytes);
 
-        return new String(decryptedBytes, StandardCharsets.UTF_8);
+        return new String(Base64.getDecoder().decode(decryptedBytes), StandardCharsets.UTF_8);
     }
 
 }
\ No newline at end of file