diff --git a/src/main/java/com/jiyunio/todolist/ResponseDTO.java b/src/main/java/com/jiyunio/todolist/ResponseDTO.java
index 67b9c90..e22e5f9 100644
--- a/src/main/java/com/jiyunio/todolist/ResponseDTO.java
+++ b/src/main/java/com/jiyunio/todolist/ResponseDTO.java
@@ -7,14 +7,12 @@
 @Getter
 @Setter
 public class ResponseDTO {
-    Long id;
-    String userId;
+    String result;
     String msg;
 
     @Builder
-    ResponseDTO(Long id, String userId, String msg) {
-        this.id = id;
-        this.userId = userId;
+    ResponseDTO(String result, String msg) {
+        this.result = result;
         this.msg = msg;
     }
 }
diff --git a/src/main/java/com/jiyunio/todolist/category/CategoryController.java b/src/main/java/com/jiyunio/todolist/category/CategoryController.java
index 16988ea..ad7cdb6 100644
--- a/src/main/java/com/jiyunio/todolist/category/CategoryController.java
+++ b/src/main/java/com/jiyunio/todolist/category/CategoryController.java
@@ -1,7 +1,9 @@
 package com.jiyunio.todolist.category;
 
 import com.jiyunio.todolist.ResponseDTO;
-import jakarta.validation.Valid;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.validation.constraints.NotBlank;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.HttpStatus;
@@ -13,11 +15,14 @@
 
 @RestController
 @RequiredArgsConstructor
+@Validated
+@Tag(name = "Category", description = "카테고리 API")
 public class CategoryController {
     private final CategoryService categoryService;
 
     @PostMapping("/category{memberId}")
-    public ResponseEntity<ResponseDTO> createCategory(@PathVariable Long memberId, @Validated @RequestParam @NotBlank String categoryName) {
+    @Operation(summary = "카테고리 생성")
+    public ResponseEntity<ResponseDTO> createCategory(@Parameter(description = "member의 id") @PathVariable Long memberId, @RequestParam @NotBlank String categoryName) {
         categoryService.createCategory(memberId, categoryName);
         ResponseDTO responseDTO = ResponseDTO.builder()
                 .msg("카테고리 생성 성공")
@@ -26,12 +31,14 @@ public ResponseEntity<ResponseDTO> createCategory(@PathVariable Long memberId, @
     }
 
     @GetMapping("/category/{memberId}")
-    public List<GetCategoryDTO> getCategory(@PathVariable Long memberId) {
+    @Operation(summary = "카테고리 조회")
+    public List<GetCategoryDTO> getCategory(@Parameter(description = "member의 id") @PathVariable Long memberId) {
         return categoryService.getCategory(memberId);
     }
 
     @PutMapping("/category/{categoryId}")
-    public ResponseEntity<ResponseDTO> updateCategory(@PathVariable Long categoryId, @RequestParam @NotBlank String categoryName) {
+    @Operation(summary = "카테고리 수정")
+    public ResponseEntity<ResponseDTO> updateCategory(@Parameter(description = "카테고리의 id") @PathVariable Long categoryId, @RequestParam @NotBlank String categoryName) {
         categoryService.updateCategory(categoryId, categoryName);
         ResponseDTO responseDTO = ResponseDTO.builder()
                 .msg("카테고리 수정 성공")
@@ -40,7 +47,8 @@ public ResponseEntity<ResponseDTO> updateCategory(@PathVariable Long categoryId,
     }
 
     @DeleteMapping("/category/{categoryId}")
-    public ResponseEntity<ResponseDTO> deleteCategory(@PathVariable Long categoryId) {
+    @Operation(summary = "카테고리 삭제")
+    public ResponseEntity<ResponseDTO> deleteCategory(@Parameter(description = "카테고리의 id") @PathVariable Long categoryId) {
         categoryService.deleteCategory(categoryId);
         ResponseDTO responseDTO = ResponseDTO.builder()
                 .msg("카테고리 삭제 성공")
diff --git a/src/main/java/com/jiyunio/todolist/category/GetCategoryDTO.java b/src/main/java/com/jiyunio/todolist/category/GetCategoryDTO.java
index dcc3f89..3f54434 100644
--- a/src/main/java/com/jiyunio/todolist/category/GetCategoryDTO.java
+++ b/src/main/java/com/jiyunio/todolist/category/GetCategoryDTO.java
@@ -1,12 +1,13 @@
 package com.jiyunio.todolist.category;
 
-import com.jiyunio.todolist.member.Member;
+import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Builder;
 import lombok.Getter;
 import lombok.Setter;
 
 @Getter
 @Setter
+@Schema(description = "카테고리 조회")
 public class GetCategoryDTO {
     private String category;
 
diff --git a/src/main/java/com/jiyunio/todolist/customError/CustomException.java b/src/main/java/com/jiyunio/todolist/customError/CustomException.java
index 3fca9a7..b3a8fe0 100644
--- a/src/main/java/com/jiyunio/todolist/customError/CustomException.java
+++ b/src/main/java/com/jiyunio/todolist/customError/CustomException.java
@@ -1,6 +1,6 @@
 package com.jiyunio.todolist.customError;
 
-import lombok.*;
+import lombok.Getter;
 import org.springframework.http.HttpStatus;
 
 @Getter
@@ -8,7 +8,7 @@ public class CustomException extends RuntimeException {
     private final HttpStatus httpStatus;
     private final ErrorCode errorCode;
 
-    public CustomException(HttpStatus httpStatus, ErrorCode errorCode){
+    public CustomException(HttpStatus httpStatus, ErrorCode errorCode) {
         this.httpStatus = httpStatus;
         this.errorCode = errorCode;
     }
diff --git a/src/main/java/com/jiyunio/todolist/customError/CustomExceptionHandler.java b/src/main/java/com/jiyunio/todolist/customError/CustomExceptionHandler.java
index 3d91aa3..027b6b0 100644
--- a/src/main/java/com/jiyunio/todolist/customError/CustomExceptionHandler.java
+++ b/src/main/java/com/jiyunio/todolist/customError/CustomExceptionHandler.java
@@ -1,13 +1,35 @@
 package com.jiyunio.todolist.customError;
 
+import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
+import org.springframework.validation.FieldError;
+import org.springframework.web.bind.MethodArgumentNotValidException;
 import org.springframework.web.bind.annotation.ControllerAdvice;
 import org.springframework.web.bind.annotation.ExceptionHandler;
 
+import java.util.ArrayList;
+import java.util.List;
+
 @ControllerAdvice
 public class CustomExceptionHandler {
     @ExceptionHandler(CustomException.class)
-    protected ResponseEntity<ErrorDTO> handleCustomException(CustomException e){
+    protected ResponseEntity<ErrorDTO> handleCustomException(CustomException e) {
         return ErrorDTO.toResponseEntity(e);
     }
+
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    protected ResponseEntity<List<ErrorDTO>> beanValidationException(MethodArgumentNotValidException e) {
+        List<FieldError> list = e.getBindingResult().getFieldErrors();
+        List<ErrorDTO> responseDTOList = new ArrayList<>();
+
+        for (FieldError error : list) {
+            ErrorDTO errorDTO = ErrorDTO.builder()
+                    .code("400_Bad_Request")
+                    .msg(error.getDefaultMessage())
+                    .build();
+
+            responseDTOList.add(errorDTO);
+        }
+        return new ResponseEntity<>(responseDTOList, HttpStatus.BAD_REQUEST);
+    }
 }
diff --git a/src/main/java/com/jiyunio/todolist/customError/ErrorDTO.java b/src/main/java/com/jiyunio/todolist/customError/ErrorDTO.java
index b10365d..8b9c580 100644
--- a/src/main/java/com/jiyunio/todolist/customError/ErrorDTO.java
+++ b/src/main/java/com/jiyunio/todolist/customError/ErrorDTO.java
@@ -1,4 +1,5 @@
 package com.jiyunio.todolist.customError;
+
 import lombok.Builder;
 import lombok.Getter;
 import lombok.Setter;
diff --git a/src/main/java/com/jiyunio/todolist/member/MemberController.java b/src/main/java/com/jiyunio/todolist/member/MemberController.java
index 09a48b8..156a82d 100644
--- a/src/main/java/com/jiyunio/todolist/member/MemberController.java
+++ b/src/main/java/com/jiyunio/todolist/member/MemberController.java
@@ -4,57 +4,44 @@
 import com.jiyunio.todolist.member.dto.ChangeUserPwDTO;
 import com.jiyunio.todolist.member.dto.SignInDTO;
 import com.jiyunio.todolist.member.dto.SignUpDTO;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.validation.Valid;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
-import org.springframework.validation.BindingResult;
-import org.springframework.validation.FieldError;
 import org.springframework.web.bind.annotation.*;
 
-import java.util.ArrayList;
-import java.util.List;
-
 @RestController
 @RequiredArgsConstructor
+@Tag(name = "Member", description = "회원 API")
 public class MemberController {
     private final MemberService memberService;
 
     @PostMapping("/signUp")
-    public ResponseEntity<?> signUp(@Valid @RequestBody SignUpDTO signUpDto, BindingResult bindingResult) {
-        if (bindingResult.hasErrors()) {
-            List<ResponseDTO> responseDTOList = returnBindingResult(bindingResult);
-            return new ResponseEntity<>(responseDTOList, HttpStatus.BAD_REQUEST);
-        }
-
+    @Operation(summary = "회원가입", description = "아이디, 비밀번호, 이메일 이용\n\n 아이디 : 5 ~ 10자 \n\n 비밀번호: 8~16자의 영문 대/소문자, 숫자, 특수문자")
+    public ResponseEntity<?> signUp(@Valid @RequestBody SignUpDTO signUpDto) {
         ResponseDTO responseDTO = ResponseDTO.builder()
-                .userId(memberService.signUp(signUpDto)) // 화면에 "ㅇㅇ님 환영합니다" 글씨 원함
+                .result(memberService.signUp(signUpDto)) // 화면에 "ㅇㅇ님 환영합니다" 글씨 원함
                 .msg("회원가입 성공")
                 .build();
         return new ResponseEntity<>(responseDTO, HttpStatus.CREATED);
     }
 
     @PostMapping("/signIn")
-    public ResponseEntity<?> signIn(@Valid @RequestBody SignInDTO signInDto, BindingResult bindingResult) {
-        if (bindingResult.hasErrors()) {
-            List<ResponseDTO> responseDTOList = returnBindingResult(bindingResult);
-            return new ResponseEntity<>(responseDTOList, HttpStatus.BAD_REQUEST);
-        }
-
+    @Operation(summary = "로그인", description = "아이디와 비밀번호 이용")
+    public ResponseEntity<?> signIn(@Valid @RequestBody SignInDTO signInDto) {
         ResponseDTO responseDTO = ResponseDTO.builder()
-                .userId(memberService.signIn(signInDto)) // 로그인하면 회원 페이지에 ㅇㅇ님 원함
+                .result(memberService.signIn(signInDto)) // 로그인하면 회원 페이지에 ㅇㅇ님 원함
                 .msg("로그인 성공")
                 .build();
         return ResponseEntity.ok(responseDTO);
     }
 
     @PutMapping("/{id}/update")
-    public ResponseEntity<?> updateUserPw(@PathVariable Long id, @Valid @RequestBody ChangeUserPwDTO changeUserPwDto, BindingResult bindingResult) {
-        if (bindingResult.hasErrors()) {
-            List<ResponseDTO> responseDTOList = returnBindingResult(bindingResult);
-            return new ResponseEntity<>(responseDTOList, HttpStatus.BAD_REQUEST);
-        }
-
+    @Operation(summary = "회원 비밀번호 수정", description = "비밀번호, 수정 비밀번호 이용")
+    public ResponseEntity<?> updateUserPw(@Parameter(description = "member의 id") @PathVariable Long id, @Valid @RequestBody ChangeUserPwDTO changeUserPwDto) {
         memberService.updateUserPw(id, changeUserPwDto);
         ResponseDTO responseDTO = ResponseDTO.builder()
                 .msg("비밀번호 변경 성공")
@@ -63,23 +50,12 @@ public ResponseEntity<?> updateUserPw(@PathVariable Long id, @Valid @RequestBody
     }
 
     @DeleteMapping("/{id}/delete")
-    public ResponseEntity<ResponseDTO> deleteMember(@PathVariable Long id, @RequestParam String userPw) {
+    @Operation(summary = "회원 탈퇴", description = "비밀번호 이용")
+    public ResponseEntity<ResponseDTO> deleteMember(@Parameter(description = "member의 id") @PathVariable Long id, @RequestParam String userPw) {
         memberService.deleteMember(id, userPw);
         ResponseDTO responseDTO = ResponseDTO.builder()
                 .msg("회원 탈퇴 성공")
                 .build();
         return new ResponseEntity<>(responseDTO, HttpStatus.NO_CONTENT);
     }
-
-    public List<ResponseDTO> returnBindingResult(BindingResult bindingResult) {
-        List<FieldError> list = bindingResult.getFieldErrors();
-        List<ResponseDTO> responseDTOList = new ArrayList<>();
-        for (FieldError error : list) {
-            ResponseDTO responseDTO = ResponseDTO.builder()
-                    .msg(error.getDefaultMessage())
-                    .build();
-            responseDTOList.add(responseDTO);
-        }
-        return responseDTOList;
-    }
 }
diff --git a/src/main/java/com/jiyunio/todolist/member/MemberService.java b/src/main/java/com/jiyunio/todolist/member/MemberService.java
index fc61f2f..c1f9822 100644
--- a/src/main/java/com/jiyunio/todolist/member/MemberService.java
+++ b/src/main/java/com/jiyunio/todolist/member/MemberService.java
@@ -5,6 +5,7 @@
 import com.jiyunio.todolist.member.dto.ChangeUserPwDTO;
 import com.jiyunio.todolist.member.dto.SignInDTO;
 import com.jiyunio.todolist.member.dto.SignUpDTO;
+import jakarta.validation.Valid;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Service;
@@ -14,7 +15,7 @@
 public class MemberService {
     private final MemberRepository memberRepository;
 
-    public String signUp(SignUpDTO signUpDto) {
+    public String signUp(@Valid SignUpDTO signUpDto) {
         if (memberRepository.existsByUserEmail(signUpDto.getUserEmail())) {
             // 이미 존재하는 이메일
             throw new CustomException(HttpStatus.BAD_REQUEST, ErrorCode.EXIST_EMAIL);
@@ -39,7 +40,7 @@ public String signUp(SignUpDTO signUpDto) {
         throw new CustomException(HttpStatus.BAD_REQUEST, ErrorCode.NOT_SAME_CONFIRM_PASSWORD);
     }
 
-    public String signIn(SignInDTO signInDto) {
+    public String signIn(@Valid SignInDTO signInDto) {
         if (memberRepository.existsByUserId(signInDto.getUserId())) {
             Member member = memberRepository.findByUserId(signInDto.getUserId()).get();
             if (member.getUserPw().equals(signInDto.getUserPw())) {
@@ -53,7 +54,7 @@ public String signIn(SignInDTO signInDto) {
         throw new CustomException(HttpStatus.NOT_FOUND, ErrorCode.WRONG_USERID_PASSWORD);
     }
 
-    public void updateUserPw(Long id, ChangeUserPwDTO changeUserPwDto) {
+    public void updateUserPw(Long id, @Valid ChangeUserPwDTO changeUserPwDto) {
         Member member = memberRepository.findById(id).get();
         if (member.getUserPw().equals(changeUserPwDto.getUserPw())) { // 회원 비밀번호 확인
             if (changeUserPwDto.getChangePw().equals(changeUserPwDto.getConfirmChangePw())) {
diff --git a/src/main/java/com/jiyunio/todolist/member/dto/ChangeUserPwDTO.java b/src/main/java/com/jiyunio/todolist/member/dto/ChangeUserPwDTO.java
index 5e9f53b..5d62e69 100644
--- a/src/main/java/com/jiyunio/todolist/member/dto/ChangeUserPwDTO.java
+++ b/src/main/java/com/jiyunio/todolist/member/dto/ChangeUserPwDTO.java
@@ -1,18 +1,25 @@
 package com.jiyunio.todolist.member.dto;
 
+import io.swagger.v3.oas.annotations.media.Schema;
 import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Pattern;
 import lombok.Getter;
 import lombok.Setter;
 
 @Getter
 @Setter
+@Schema(description = "회원 비밀번호 수정")
 public class ChangeUserPwDTO {
     @NotBlank(message = "비밀번호를 입력하세요.")
+    @Schema(description = "회원 비밀번호")
     private String userPw;
 
     @NotBlank(message = "변경 비밀번호를 입력하세요.")
+    @Pattern(regexp = "(?=.*[0-9])(?=.*[a-zA-Z])(?=.*\\W)(?=\\S+$).{8,16}")
+    @Schema(description = "회원 수정 비밀번호", example = "qwer1234!")
     private String changePw;
 
     @NotBlank(message = "확인 비밀번호를 입력하세요.")
+    @Schema(description = "회원 수정 확인 비밀번호")
     private String confirmChangePw;
 }
diff --git a/src/main/java/com/jiyunio/todolist/member/dto/SignInDTO.java b/src/main/java/com/jiyunio/todolist/member/dto/SignInDTO.java
index 8830ebd..7e75d3d 100644
--- a/src/main/java/com/jiyunio/todolist/member/dto/SignInDTO.java
+++ b/src/main/java/com/jiyunio/todolist/member/dto/SignInDTO.java
@@ -1,5 +1,6 @@
 package com.jiyunio.todolist.member.dto;
 
+import io.swagger.v3.oas.annotations.media.Schema;
 import jakarta.validation.constraints.NotBlank;
 import lombok.Getter;
 import lombok.Setter;
@@ -8,8 +9,10 @@
 @Setter
 public class SignInDTO {
     @NotBlank(message = "아이디를 입력하세요.")
+    @Schema(example = "qwe123")
     private String userId;
 
     @NotBlank(message = "비밀번호를 입력하세요.")
+    @Schema(example = "qwer1234!")
     private String userPw;
 }
diff --git a/src/main/java/com/jiyunio/todolist/member/dto/SignUpDTO.java b/src/main/java/com/jiyunio/todolist/member/dto/SignUpDTO.java
index 280b1e1..79c46af 100644
--- a/src/main/java/com/jiyunio/todolist/member/dto/SignUpDTO.java
+++ b/src/main/java/com/jiyunio/todolist/member/dto/SignUpDTO.java
@@ -1,5 +1,6 @@
 package com.jiyunio.todolist.member.dto;
 
+import io.swagger.v3.oas.annotations.media.Schema;
 import jakarta.validation.constraints.Email;
 import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.Pattern;
@@ -8,17 +9,21 @@
 
 @Getter
 @Setter
+@Schema(description = "회원가입")
 public class SignUpDTO {
+
     @NotBlank(message = "아이디를 입력하세요.")
     @Pattern(regexp = "(?=.*[a-zA-Z])(?=\\S+$).{5,10}", message = "아이디 : 5~10자")
+    @Schema(description = "회원의 userId : 영문 대/소문자 5~10자", example = "qwe123")
     private String userId;
-
     @NotBlank(message = "비밀번호를 입력하세요.")
     @Pattern(regexp = "(?=.*[0-9])(?=.*[a-zA-Z])(?=.*\\W)(?=\\S+$).{8,16}", message = "비밀번호: 8~16자의 영문 대/소문자, 숫자, 특수문자를 사용하십쇼.")
+    @Schema(description = "회원의 비밀번호 : 8~16자의 영문 대/소문자, 숫자, 특수문자", example = "qwer123!")
     private String userPw;
 
     @NotBlank(message = "이메일를 입력하세요.")
     @Email(message = "이메일 형식이 맞지 않습니다.")
+    @Schema(description = "회원의 이메일", example = "qwer@google.com")
     private String userEmail;
 
     @NotBlank(message = "확인 비밀번호를 입력하세요.")
diff --git a/src/main/java/com/jiyunio/todolist/todo/Todo.java b/src/main/java/com/jiyunio/todolist/todo/Todo.java
index 8adc6dc..4021981 100644
--- a/src/main/java/com/jiyunio/todolist/todo/Todo.java
+++ b/src/main/java/com/jiyunio/todolist/todo/Todo.java
@@ -20,7 +20,7 @@ public class Todo {
     private Long id;
 
     @ManyToOne(fetch = FetchType.LAZY)
-    @JoinColumn(name = "memberId")
+    @JoinColumn(name = "member  Id")
     private Member member;
 
     @Lob // 길이 제한 X
diff --git a/src/main/java/com/jiyunio/todolist/todo/TodoController.java b/src/main/java/com/jiyunio/todolist/todo/TodoController.java
index bb468db..5d9a2df 100644
--- a/src/main/java/com/jiyunio/todolist/todo/TodoController.java
+++ b/src/main/java/com/jiyunio/todolist/todo/TodoController.java
@@ -4,29 +4,27 @@
 import com.jiyunio.todolist.todo.dto.CreateTodoDTO;
 import com.jiyunio.todolist.todo.dto.GetTodoDTO;
 import com.jiyunio.todolist.todo.dto.UpdateTodoDTO;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.validation.Valid;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
-import org.springframework.validation.BindingResult;
-import org.springframework.validation.FieldError;
 import org.springframework.web.bind.annotation.*;
 
-import java.util.ArrayList;
 import java.util.List;
 
 @RestController
 @RequestMapping("/todo")
 @RequiredArgsConstructor
+@Tag(name = "Todo", description = "todo API")
 public class TodoController {
     private final TodoService todoService;
 
     @PostMapping("/{memberId}")
-    public ResponseEntity<?> createTodo(@PathVariable Long memberId, @Valid @RequestBody CreateTodoDTO createTodo, BindingResult bindingResult) {
-        if (bindingResult.hasErrors()) {
-            List<ResponseDTO> responseDTOList = returnBindingResult(bindingResult);
-            return new ResponseEntity<>(responseDTOList, HttpStatus.BAD_REQUEST);
-        }
+    @Operation(summary = "todo 생성", description = "todo checked 기본 값 = False")
+    public ResponseEntity<?> createTodo(@Parameter(description = "member의 id") @PathVariable Long memberId, @Valid @RequestBody CreateTodoDTO createTodo) {
         todoService.createTodo(memberId, createTodo);
         ResponseDTO responseDTO = ResponseDTO.builder()
                 .msg("Todo 생성 완료")
@@ -35,17 +33,14 @@ public ResponseEntity<?> createTodo(@PathVariable Long memberId, @Valid @Request
     }
 
     @GetMapping("/{memberId}")
-    public List<GetTodoDTO> getTodo(@PathVariable Long memberId) {
+    @Operation(summary = "todo 조회")
+    public List<GetTodoDTO> getTodo(@Parameter(description = "member의 id") @PathVariable Long memberId) {
         return todoService.getTodo(memberId);
     }
 
     @PutMapping("/{todoId}")
-    public ResponseEntity<?> updateTodo(@PathVariable Long todoId, @Valid @RequestBody UpdateTodoDTO updateTodo, BindingResult bindingResult) {
-        if (bindingResult.hasErrors()) {
-            List<ResponseDTO> responseDTOList = returnBindingResult(bindingResult);
-            return new ResponseEntity<>(responseDTOList, HttpStatus.BAD_REQUEST);
-        }
-
+    @Operation(summary = "todo 수정")
+    public ResponseEntity<?> updateTodo(@Parameter(description = "todo의 id") @PathVariable Long todoId, @Valid @RequestBody UpdateTodoDTO updateTodo) {
         todoService.updateTodo(todoId, updateTodo);
         ResponseDTO responseDTO = ResponseDTO.builder()
                 .msg("Todo 수정 완료")
@@ -54,23 +49,12 @@ public ResponseEntity<?> updateTodo(@PathVariable Long todoId, @Valid @RequestBo
     }
 
     @DeleteMapping("/{todoId}")
-    public ResponseEntity<ResponseDTO> deleteTodo(@PathVariable Long todoId) {
+    @Operation(summary = "todo 삭제")
+    public ResponseEntity<ResponseDTO> deleteTodo(@Parameter(description = "todo의 id") @PathVariable Long todoId) {
         todoService.deleteTodo(todoId);
         ResponseDTO responseDTO = ResponseDTO.builder()
                 .msg("Todo 삭제 완료")
                 .build();
         return new ResponseEntity<>(responseDTO, HttpStatus.NO_CONTENT);
     }
-
-    public List<ResponseDTO> returnBindingResult(BindingResult bindingResult) {
-        List<FieldError> list = bindingResult.getFieldErrors();
-        List<ResponseDTO> responseDTOList = new ArrayList<>();
-        for (FieldError error : list) {
-            ResponseDTO responseDTO = ResponseDTO.builder()
-                    .msg(error.getDefaultMessage())
-                    .build();
-            responseDTOList.add(responseDTO);
-        }
-        return responseDTOList;
-    }
 }
diff --git a/src/main/java/com/jiyunio/todolist/todo/dto/CreateTodoDTO.java b/src/main/java/com/jiyunio/todolist/todo/dto/CreateTodoDTO.java
index 310cd50..90182c3 100644
--- a/src/main/java/com/jiyunio/todolist/todo/dto/CreateTodoDTO.java
+++ b/src/main/java/com/jiyunio/todolist/todo/dto/CreateTodoDTO.java
@@ -1,5 +1,6 @@
 package com.jiyunio.todolist.todo.dto;
 
+import io.swagger.v3.oas.annotations.media.Schema;
 import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.NotNull;
 import lombok.Getter;
@@ -9,6 +10,7 @@
 
 @Getter
 @Setter
+@Schema(description = "todo 생성 : todo checked 기본 값 False")
 public class CreateTodoDTO {
     @NotBlank(message = "todo를 작성해주세요.")
     private String content;
diff --git a/src/main/java/com/jiyunio/todolist/todo/dto/GetTodoDTO.java b/src/main/java/com/jiyunio/todolist/todo/dto/GetTodoDTO.java
index 04e9197..75fc145 100644
--- a/src/main/java/com/jiyunio/todolist/todo/dto/GetTodoDTO.java
+++ b/src/main/java/com/jiyunio/todolist/todo/dto/GetTodoDTO.java
@@ -1,5 +1,6 @@
 package com.jiyunio.todolist.todo.dto;
 
+import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Builder;
 import lombok.Getter;
 import lombok.Setter;
@@ -8,6 +9,7 @@
 
 @Getter
 @Setter
+@Schema(description = "todo 조회")
 public class GetTodoDTO {
     private String content;
 
diff --git a/src/main/java/com/jiyunio/todolist/todo/dto/UpdateTodoDTO.java b/src/main/java/com/jiyunio/todolist/todo/dto/UpdateTodoDTO.java
index 66e54ac..a4d0dcd 100644
--- a/src/main/java/com/jiyunio/todolist/todo/dto/UpdateTodoDTO.java
+++ b/src/main/java/com/jiyunio/todolist/todo/dto/UpdateTodoDTO.java
@@ -1,5 +1,6 @@
 package com.jiyunio.todolist.todo.dto;
 
+import io.swagger.v3.oas.annotations.media.Schema;
 import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.NotNull;
 import lombok.Getter;
@@ -9,6 +10,7 @@
 
 @Getter
 @Setter
+@Schema(description = "todo 수정")
 public class UpdateTodoDTO {
     @NotBlank(message = "todo를 작성해주세요.")
     private String content;