diff --git a/src/main/java/org/idiot/yesslave/YesSlaveApplication.java b/src/main/java/org/idiot/yesslave/YesSlaveApplication.java
index 45ef084..194f8e9 100644
--- a/src/main/java/org/idiot/yesslave/YesSlaveApplication.java
+++ b/src/main/java/org/idiot/yesslave/YesSlaveApplication.java
@@ -2,6 +2,7 @@
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
 
 @SpringBootApplication
 public class YesSlaveApplication {
diff --git a/src/main/java/org/idiot/yesslave/global/exception/ErrorCode.java b/src/main/java/org/idiot/yesslave/global/exception/ErrorCode.java
new file mode 100644
index 0000000..cc5ac7e
--- /dev/null
+++ b/src/main/java/org/idiot/yesslave/global/exception/ErrorCode.java
@@ -0,0 +1,15 @@
+package org.idiot.yesslave.global.exception;
+
+import lombok.Getter;
+
+public enum ErrorCode {
+    ID_NOT_FOUND("해당 ID를 찾을 수 없습니다."),
+    ID_DELETE("삭제된 ID입니다.");
+
+    @Getter
+    private String message;
+
+    ErrorCode(String message) {
+        this.message = message;
+    }
+}
diff --git a/src/main/java/org/idiot/yesslave/global/exception/TodoIdHandler.java b/src/main/java/org/idiot/yesslave/global/exception/TodoIdHandler.java
new file mode 100644
index 0000000..5510988
--- /dev/null
+++ b/src/main/java/org/idiot/yesslave/global/exception/TodoIdHandler.java
@@ -0,0 +1,14 @@
+package org.idiot.yesslave.global.exception;
+
+import lombok.Getter;
+
+public class TodoIdHandler extends RuntimeException {
+
+    @Getter
+    private final ErrorCode errorCode;
+
+    public TodoIdHandler(ErrorCode errorCode) {
+        super(errorCode.getMessage());
+        this.errorCode = errorCode;
+    }
+}
diff --git a/src/main/java/org/idiot/yesslave/todo/application/TodoService.java b/src/main/java/org/idiot/yesslave/todo/application/TodoService.java
new file mode 100644
index 0000000..6a050e9
--- /dev/null
+++ b/src/main/java/org/idiot/yesslave/todo/application/TodoService.java
@@ -0,0 +1,60 @@
+package org.idiot.yesslave.todo.application;
+
+import lombok.RequiredArgsConstructor;
+import org.idiot.yesslave.global.exception.TodoIdHandler;
+import org.idiot.yesslave.global.exception.ErrorCode;
+import org.idiot.yesslave.todo.domain.Todo;
+import org.idiot.yesslave.todo.dto.SaveDto;
+import org.idiot.yesslave.todo.dto.UpdateDto;
+import org.idiot.yesslave.todo.repository.TodoRepository;
+import org.springframework.stereotype.Service;
+
+import javax.transaction.Transactional;
+
+@Service
+@RequiredArgsConstructor
+public class TodoService {
+    private final TodoRepository todoRepository;
+
+    @Transactional
+    public void save(SaveDto saveDto) {
+        todoRepository.save(Todo.builder()
+                .todo(saveDto.getTodo())
+                .build());
+    }
+
+    @Transactional
+    public void update(Long id, UpdateDto updateDto) {
+        Todo todo = existId(id);
+        checkDeleteStatus(todo);
+        todo.update(updateDto.getTodo());
+    }
+
+    @Transactional
+    public boolean changeCheck(Long id) {
+        Todo todo = existId(id);
+        checkDeleteStatus(todo);
+        todo.changeCheck(!todo.isTodoCheck());
+        return todo.isTodoCheck();
+    }
+
+    @Transactional
+    public void delete(Long id) {
+        Todo todo = existId(id);
+        checkDeleteStatus(todo);
+        todo.delete();
+    }
+
+    private void checkDeleteStatus(Todo todo) {
+        if (todo.isDelete()) {
+            throw new TodoIdHandler(ErrorCode.ID_DELETE);
+        }
+    }
+
+    public Todo existId(Long id) {
+        Todo todo = todoRepository.findById(id)
+                .orElseThrow(() -> new TodoIdHandler(ErrorCode.ID_NOT_FOUND));
+        return todo;
+    }
+
+}
diff --git a/src/main/java/org/idiot/yesslave/todo/domain/Todo.java b/src/main/java/org/idiot/yesslave/todo/domain/Todo.java
new file mode 100644
index 0000000..2e7e47b
--- /dev/null
+++ b/src/main/java/org/idiot/yesslave/todo/domain/Todo.java
@@ -0,0 +1,56 @@
+package org.idiot.yesslave.todo.domain;
+
+import lombok.*;
+import org.hibernate.annotations.Comment;
+import org.idiot.yesslave.global.jpa.AuditInformation;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+
+@Entity
+@Getter
+@Table(name = "TODO")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Todo extends AuditInformation {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "ID", nullable = false)
+    private Long id;
+
+    @Column(name = "TODO", nullable = false)
+    @Comment("다짐")
+    private String todo;
+
+    @Column(name = "TODO_CHECK", nullable = false)
+    @Comment("실행여부")
+    private boolean todoCheck = false;
+
+    @Column(name = "DELETE", nullable = false)
+    @Comment("삭제여부")
+    private boolean delete = false;
+
+
+    @Builder
+    public Todo(String todo) {
+        this.todo = todo;
+    }
+
+
+    public void changeCheck(boolean todoCheck) {
+        this.todoCheck = todoCheck;
+    }
+
+    public void update(String todo) {
+        this.todo = todo;
+    }
+    public void delete () {
+        delete = true;
+    }
+
+}
diff --git a/src/main/java/org/idiot/yesslave/todo/dto/SaveDto.java b/src/main/java/org/idiot/yesslave/todo/dto/SaveDto.java
new file mode 100644
index 0000000..125f9fb
--- /dev/null
+++ b/src/main/java/org/idiot/yesslave/todo/dto/SaveDto.java
@@ -0,0 +1,18 @@
+package org.idiot.yesslave.todo.dto;
+
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+// cannot deserialize from Object value (no delegate- or property-based Creator)에러로 인해 기본 생성자 필요
+public class SaveDto {
+    private String todo;
+    @Builder
+    public SaveDto(String todo) {
+        this.todo = todo;
+    }
+
+}
diff --git a/src/main/java/org/idiot/yesslave/todo/dto/UpdateDto.java b/src/main/java/org/idiot/yesslave/todo/dto/UpdateDto.java
new file mode 100644
index 0000000..a6bfa95
--- /dev/null
+++ b/src/main/java/org/idiot/yesslave/todo/dto/UpdateDto.java
@@ -0,0 +1,15 @@
+package org.idiot.yesslave.todo.dto;
+
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class UpdateDto {
+    private String todo;
+
+    public UpdateDto(String todo) {
+        this.todo = todo;
+    }
+}
diff --git a/src/main/java/org/idiot/yesslave/todo/repository/TodoRepository.java b/src/main/java/org/idiot/yesslave/todo/repository/TodoRepository.java
new file mode 100644
index 0000000..d7cc2de
--- /dev/null
+++ b/src/main/java/org/idiot/yesslave/todo/repository/TodoRepository.java
@@ -0,0 +1,7 @@
+package org.idiot.yesslave.todo.repository;
+
+import org.idiot.yesslave.todo.domain.Todo;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface TodoRepository extends JpaRepository<Todo,Long>{
+}
diff --git a/src/main/java/org/idiot/yesslave/todo/ui/TodoController.java b/src/main/java/org/idiot/yesslave/todo/ui/TodoController.java
new file mode 100644
index 0000000..9ce5ba0
--- /dev/null
+++ b/src/main/java/org/idiot/yesslave/todo/ui/TodoController.java
@@ -0,0 +1,40 @@
+package org.idiot.yesslave.todo.ui;
+
+import lombok.RequiredArgsConstructor;
+import org.idiot.yesslave.todo.application.TodoService;
+import org.idiot.yesslave.todo.dto.SaveDto;
+import org.idiot.yesslave.todo.dto.UpdateDto;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/todo")
+@RequiredArgsConstructor
+public class TodoController {
+
+    private final TodoService todoService;
+
+    @PostMapping
+    public  ResponseEntity todoSave(@RequestBody SaveDto saveDto) {
+        todoService.save(saveDto);
+        return ResponseEntity.ok("Todo save successfully");
+    }
+
+    @PatchMapping("/{id}")
+    public ResponseEntity todoUpdate(@PathVariable Long id, @RequestBody UpdateDto updateDto) {
+        todoService.update(id, updateDto);
+        return ResponseEntity.ok("Todo updated successfully");
+    }
+
+    @PostMapping("/{id}")
+    public boolean changeCheck(@PathVariable Long id) {
+        return todoService.changeCheck(id);
+    }
+
+    @DeleteMapping("/{id}")
+    public ResponseEntity delete(@PathVariable Long id) {
+        todoService.delete(id);
+        return ResponseEntity.ok("Todo delete successfully");
+    }
+
+}
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index f3f9fb7..e6034a2 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -20,4 +20,6 @@ spring:
       add-mappings: false
   mvc:
     throw-exception-if-no-handler-found: true
-    
\ No newline at end of file
+  main:
+    allow-bean-definition-overriding: true
+
diff --git a/src/test/java/org/idiot/yesslave/todo/ui/TodoControllerTest.java b/src/test/java/org/idiot/yesslave/todo/ui/TodoControllerTest.java
new file mode 100644
index 0000000..830c576
--- /dev/null
+++ b/src/test/java/org/idiot/yesslave/todo/ui/TodoControllerTest.java
@@ -0,0 +1,127 @@
+package org.idiot.yesslave.todo.ui;
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import org.assertj.core.api.Assertions;
+import org.idiot.yesslave.todo.domain.Todo;
+import org.idiot.yesslave.todo.dto.SaveDto;
+import org.idiot.yesslave.todo.repository.TodoRepository;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.servlet.MockMvc;
+
+
+@SpringBootTest
+@AutoConfigureMockMvc
+public class TodoControllerTest {
+    @Autowired
+    ObjectMapper mapper;
+
+    @Autowired
+    MockMvc mvc;
+
+    @Autowired
+    private TodoRepository todoRepository;
+
+    private static final String BASE_URL = "/todo";
+
+    @Test
+    @DisplayName("저장 테스트")
+    void save_test() throws Exception {
+        //given
+        String text = "Test schedule";
+
+        //when
+        String body = mapper.writeValueAsString(
+            SaveDto.builder()
+                    .todo(text)
+                    .build()
+        );
+
+        //then
+        mvc.perform(post(BASE_URL)
+                        .content(body) //HTTP Body에 데이터를 담는다
+                        .contentType(MediaType.APPLICATION_JSON) //보내는 데이터의 타입을 명시
+                )
+                .andExpect(status().isOk())
+                .andExpect(content().string("Todo save successfully"));
+    }
+
+    @Test
+    @DisplayName("수정 테스트")
+    void patch_test() throws Exception {
+
+        //given
+        String text = "Test schedule";
+        String change_text = "Change test schedule";
+
+        //when
+        todoRepository.save(Todo.builder()
+                        .todo(text)
+                        .build());
+
+        String body = mapper.writeValueAsString(
+                SaveDto.builder()
+                        .todo(change_text)
+                        .build()
+        );
+
+        //then
+        mvc.perform(patch(BASE_URL + "/2")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content(body)
+                )
+                .andExpect(status().isOk())
+                .andExpect(content().string("Todo updated successfully"));
+
+    }
+
+    @Test
+    @DisplayName("체크 변경 테스트")
+    void change_check_test() throws Exception {
+
+        //given
+        String text = "Test schedule";
+
+        //when
+        todoRepository.save(Todo.builder()
+                .todo(text)
+                .build());
+
+        //then
+        mvc.perform(post(BASE_URL + "/2")
+                        .contentType(MediaType.APPLICATION_JSON)
+                )
+                .andExpect(status().isOk())
+                .andExpect(content().string("Todo change successfully"));
+
+    }
+
+    @DisplayName("삭제 테스트")
+    @Test
+    public void delete_Test() throws Exception {
+
+        //given
+        String text = "Test schedule";
+
+        //when
+        todoRepository.save(Todo.builder()
+                .todo(text)
+                .build());
+
+        //then
+        mvc.perform(delete(BASE_URL + "/1"))
+                .andExpect(status().isOk())
+                .andExpect(content().string("Todo delete successfully"));
+
+        Assertions.assertThat(todoRepository.findById(1L).isEmpty());
+    }
+}
diff --git a/src/test/java/org/idiot/yesslave/worktimer/ui/WorkTimerControllerTest.java b/src/test/java/org/idiot/yesslave/worktimer/ui/WorkTimerControllerTest.java
index 9082829..8d8274a 100644
--- a/src/test/java/org/idiot/yesslave/worktimer/ui/WorkTimerControllerTest.java
+++ b/src/test/java/org/idiot/yesslave/worktimer/ui/WorkTimerControllerTest.java
@@ -29,7 +29,7 @@
 import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
 
 
-@WebMvcTest
+@WebMvcTest(WorkTimerController.class)
 @ExtendWith(SpringExtension.class)
 class WorkTimerControllerTest {