diff --git a/src/main/java/leets/weeth/domain/user/service/UserService.java b/src/main/java/leets/weeth/domain/user/service/UserService.java
index 36336857..6f82a1c1 100644
--- a/src/main/java/leets/weeth/domain/user/service/UserService.java
+++ b/src/main/java/leets/weeth/domain/user/service/UserService.java
@@ -5,6 +5,8 @@
 import leets.weeth.domain.user.entity.User;
 import leets.weeth.domain.user.mapper.UserMapper;
 import leets.weeth.domain.user.repository.UserRepository;
+import leets.weeth.global.common.error.exception.custom.StudentIdExistsException;
+import leets.weeth.global.common.error.exception.custom.TelExistsException;
 import leets.weeth.global.common.error.exception.custom.UserExistsException;
 import leets.weeth.global.common.error.exception.custom.UserNotFoundException;
 import lombok.RequiredArgsConstructor;
@@ -124,10 +126,11 @@ public void validate(String email){
     }
 
     private void validate(UserDTO.SignUp requestDto) {
-        if(userRepository.existsByEmail(requestDto.email()) ||  // 이메일 중복
-                userRepository.existsByStudentId(requestDto.studentId()) ||     // 학번 중복
-                userRepository.existsByTel(requestDto.tel()))   // 전화번호 중복
-            throw new UserExistsException();
+        if(userRepository.existsByStudentId(requestDto.studentId())){
+            throw new StudentIdExistsException();
+        } else if(userRepository.existsByTel(requestDto.tel())){
+            throw new TelExistsException();
+        }
     }
 
     private void validate(Long userId, UserDTO.Update dto) {
diff --git a/src/main/java/leets/weeth/global/common/error/exception/ExceptionType.java b/src/main/java/leets/weeth/global/common/error/exception/ExceptionType.java
index 09b11417..9db17b62 100644
--- a/src/main/java/leets/weeth/global/common/error/exception/ExceptionType.java
+++ b/src/main/java/leets/weeth/global/common/error/exception/ExceptionType.java
@@ -27,7 +27,9 @@ public enum ExceptionType {
     NOTICE_TYPE_NOT_MATCH(HttpStatus.BAD_REQUEST, NoticeTypeNotMatchException.class),
     ACCOUNT_NOT_FOUND(HttpStatus.BAD_REQUEST, AccountNotFoundException.class),
     ACCOUNT_ALREADY_EXISTS(HttpStatus.BAD_REQUEST, AccountExistsException.class),
-    ATTENDANCE_EVENT_TYPE_NOT_MATCH(HttpStatus.BAD_REQUEST, AttendanceEventTypeNotMatchException.class);
+    ATTENDANCE_EVENT_TYPE_NOT_MATCH(HttpStatus.BAD_REQUEST, AttendanceEventTypeNotMatchException.class),
+    STUDENT_ID_ALREADY_EXISTS(HttpStatus.BAD_REQUEST, StudentIdExistsException.class),
+    TEL_ALREADY_EXISTS(HttpStatus.BAD_REQUEST, TelExistsException.class);
 
     private final HttpStatus httpStatus;
     private final Class<? extends Exception> type;
diff --git a/src/main/java/leets/weeth/global/common/error/exception/custom/StudentIdExistsException.java b/src/main/java/leets/weeth/global/common/error/exception/custom/StudentIdExistsException.java
new file mode 100644
index 00000000..2a968e91
--- /dev/null
+++ b/src/main/java/leets/weeth/global/common/error/exception/custom/StudentIdExistsException.java
@@ -0,0 +1,7 @@
+package leets.weeth.global.common.error.exception.custom;
+
+import jakarta.persistence.EntityNotFoundException;
+
+public class StudentIdExistsException extends EntityNotFoundException {
+    public StudentIdExistsException() {super("이미 가입된 학번입니다.");}
+}
diff --git a/src/main/java/leets/weeth/global/common/error/exception/custom/TelExistsException.java b/src/main/java/leets/weeth/global/common/error/exception/custom/TelExistsException.java
new file mode 100644
index 00000000..c95a0d6b
--- /dev/null
+++ b/src/main/java/leets/weeth/global/common/error/exception/custom/TelExistsException.java
@@ -0,0 +1,7 @@
+package leets.weeth.global.common.error.exception.custom;
+
+import jakarta.persistence.EntityNotFoundException;
+
+public class TelExistsException extends EntityNotFoundException {
+    public TelExistsException() {super("이미 가입된 전화번호 입니다.");}
+}