diff --git a/.gitignore b/.gitignore
index 72265e9..abdb730 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,9 @@
 build/
 out/
 *.jar
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
 *.war
 *.ear
 
diff --git a/build.gradle b/build.gradle
index b71c79d..0f66f0e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -24,7 +24,7 @@ repositories {
 }
 
 ext {
-	mapstructVersion = "1.6.0.Final"
+	mapstructVersion = "1.6.3"
 	springDocVersion = "2.5.0"
 	jjwtVersion = "0.12.6"
 	awsSdkVersion = "2.25.68"
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..1b33c55
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/src/main/java/com/teamEWSN/gitdeun/common/exception/ErrorCode.java b/src/main/java/com/teamEWSN/gitdeun/common/exception/ErrorCode.java
new file mode 100644
index 0000000..fbdde60
--- /dev/null
+++ b/src/main/java/com/teamEWSN/gitdeun/common/exception/ErrorCode.java
@@ -0,0 +1,42 @@
+package com.teamEWSN.gitdeun.common.exception;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import org.springframework.http.HttpStatus;
+
+@Getter
+@AllArgsConstructor
+public enum ErrorCode {
+    // 인증 관련
+    INVALID_PASSWORD(HttpStatus.UNAUTHORIZED, "AUTH-001", "비밀번호가 일치하지 않습니다."),
+    REFRESH_TOKEN_EXPIRED(HttpStatus.UNAUTHORIZED, "AUTH-002", "리프레시 토큰이 만료되었습니다."),
+    NO_TOKEN(HttpStatus.UNAUTHORIZED, "AUTH-003", "토큰이 존재하지 않습니다."),
+    INVALID_TOKEN(HttpStatus.UNAUTHORIZED, "AUTH-004", "유효하지 않은 토큰입니다."),
+    ACCESS_DENIED(HttpStatus.UNAUTHORIZED, "AUTH-005", "인증되지 않은 유저입니다."),
+    DELETE_USER_DENIED(HttpStatus.FORBIDDEN, "AUTH-006", "회원 탈퇴가 거부되었습니다."),
+    ROLE_NOT_FOUND(HttpStatus.FORBIDDEN, "AUTH-007", "권한 정보가 없습니다."),
+
+
+    // 계정 관련
+    DUPLICATED_REAL_ID(HttpStatus.CONFLICT, "ACCOUNT-001", "이미 존재하는 아이디입니다."),
+    USER_NOT_FOUND_BY_REAL_ID(HttpStatus.NOT_FOUND, "ACCOUNT-002", "해당 아이디의 회원을 찾을 수 없습니다."),
+    FORBIDDEN_ACCESS(HttpStatus.FORBIDDEN, "AUTH-011", "잘못된 접근입니다."),
+
+
+    // S3 파일 관련
+    FILE_COUNT_EXCEEDED(HttpStatus.BAD_REQUEST, "FILE-001", "업로드 가능한 파일 개수를 초과했습니다."),
+    FILE_SIZE_EXCEEDED(HttpStatus.BAD_REQUEST, "FILE-002", "파일 크기가 허용된 용량을 초과했습니다."),
+    INVALID_FILE_TYPE(HttpStatus.BAD_REQUEST, "FILE-003", "지원하지 않는 파일 형식입니다."),
+    FILE_NOT_FOUND(HttpStatus.NOT_FOUND, "FILE-004", "요청한 파일을 찾을 수 없습니다."),
+    FILE_UPLOAD_FAILED(HttpStatus.INTERNAL_SERVER_ERROR, "FILE-006", "파일 업로드 중 오류가 발생했습니다."),
+    INVALID_FILE_LIST(HttpStatus.BAD_REQUEST, "FILE-006", "파일 목록이 비어있거나 유효하지 않습니다."),
+    INVALID_FILE_PATH(HttpStatus.BAD_REQUEST, "FILE-007", "파일 경로나 이름이 유효하지 않습니다."),
+    FILE_MOVE_FAILED(HttpStatus.INTERNAL_SERVER_ERROR, "FILE-008", "파일 이동 중 오류가 발생했습니다.");
+
+    
+
+    private final HttpStatus httpStatus;
+    private final String code;
+    private final String message;
+
+}
\ No newline at end of file
diff --git a/src/main/java/com/teamEWSN/gitdeun/common/exception/ErrorResponse.java b/src/main/java/com/teamEWSN/gitdeun/common/exception/ErrorResponse.java
new file mode 100644
index 0000000..678e896
--- /dev/null
+++ b/src/main/java/com/teamEWSN/gitdeun/common/exception/ErrorResponse.java
@@ -0,0 +1,24 @@
+package com.teamEWSN.gitdeun.common.exception;
+
+import lombok.Builder;
+import lombok.Getter;
+import lombok.ToString;
+import org.springframework.http.ResponseEntity;
+
+@ToString
+@Getter
+@Builder
+public class ErrorResponse {
+    private final String code;
+    private final String message;
+
+    public static ResponseEntity<ErrorResponse> toResponseEntity(ErrorCode e) {
+        return ResponseEntity
+                .status(e.getHttpStatus())
+                .body(ErrorResponse.builder()
+                        .code(e.getCode())
+                        .message(e.getMessage())
+                        .build());
+    }
+
+}
diff --git a/src/main/java/com/teamEWSN/gitdeun/common/exception/GlobalException.java b/src/main/java/com/teamEWSN/gitdeun/common/exception/GlobalException.java
new file mode 100644
index 0000000..10d2404
--- /dev/null
+++ b/src/main/java/com/teamEWSN/gitdeun/common/exception/GlobalException.java
@@ -0,0 +1,10 @@
+package com.teamEWSN.gitdeun.common.exception;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class GlobalException extends RuntimeException {
+    ErrorCode errorCode;
+}
diff --git a/src/main/java/com/teamEWSN/gitdeun/common/exception/GlobalExceptionHandler.java b/src/main/java/com/teamEWSN/gitdeun/common/exception/GlobalExceptionHandler.java
new file mode 100644
index 0000000..e1ffd1e
--- /dev/null
+++ b/src/main/java/com/teamEWSN/gitdeun/common/exception/GlobalExceptionHandler.java
@@ -0,0 +1,13 @@
+package com.teamEWSN.gitdeun.common.exception;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+    @ExceptionHandler(GlobalException.class)
+    public ResponseEntity<ErrorResponse> handleGlobalException(GlobalException e) {
+        return ErrorResponse.toResponseEntity(e.getErrorCode());
+    }
+}