diff --git a/src/main/java/com/example/demo/app/domain/model/GoalModel.java b/src/main/java/com/example/demo/app/domain/model/GoalModel.java
index 7764281..94a57d2 100644
--- a/src/main/java/com/example/demo/app/domain/model/GoalModel.java
+++ b/src/main/java/com/example/demo/app/domain/model/GoalModel.java
@@ -2,6 +2,9 @@ package com.example.demo.app.domain.model;
 
 import java.time.LocalDate;
 
+import com.example.demo.app.infra.entity.GoalEntity;
+import com.example.demo.app.presentation.form.GoalForm;
+
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 
@@ -21,4 +24,35 @@ public class GoalModel {
 
 	private Integer goalComplete;
 
+	public static GoalModel convertFrom(GoalEntity goalEntity) {
+		return new GoalModel(
+				goalEntity.getGoalId(),
+				goalEntity.getGoalTitle(),
+				goalEntity.getGoalSubtitle(),
+				goalEntity.getTargetAmount(),
+				goalEntity.getDeadline(),
+				goalEntity.getGoalComplete());
+	}
+
+	public static GoalEntity convertTo(GoalModel goalModel) {
+		return new GoalEntity(
+				goalModel.getGoalId(),
+				goalModel.getGoalTitle(),
+				goalModel.getGoalSubtitle(),
+				goalModel.getTargetAmount(),
+				goalModel.getDeadline(),
+				goalModel.getGoalComplete(),
+				null);
+	}
+	
+	public static GoalModel convertFrom(GoalForm goalForm) {
+		return new GoalModel(
+				goalForm.getGoalId(),
+				goalForm.getGoalTitle(),
+				goalForm.getGoalSubtitle(),
+				goalForm.getTargetAmount(),
+				goalForm.getDeadline(),
+				goalForm.getGoalComplete());
+	}
+
 }
\ No newline at end of file
diff --git a/src/main/java/com/example/demo/app/domain/service/GoalService.java b/src/main/java/com/example/demo/app/domain/service/GoalService.java
new file mode 100644
index 0000000..294f7ac
--- /dev/null
+++ b/src/main/java/com/example/demo/app/domain/service/GoalService.java
@@ -0,0 +1,17 @@
+package com.example.demo.app.domain.service;
+
+import com.example.demo.app.domain.model.GoalModel;
+
+public interface GoalService {
+
+	GoalModel getGoalById(Long goalId);
+	
+	GoalModel getGoalByUserId(Long userId); 
+
+	GoalModel createGoal(GoalModel goalModel);
+
+	GoalModel updateGoal(GoalModel goalModel);
+
+//	void deleteGoal(Long goalId);
+
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/demo/app/domain/service/impl/GoalServiceImpl.java b/src/main/java/com/example/demo/app/domain/service/impl/GoalServiceImpl.java
new file mode 100644
index 0000000..56f4ea4
--- /dev/null
+++ b/src/main/java/com/example/demo/app/domain/service/impl/GoalServiceImpl.java
@@ -0,0 +1,55 @@
+package com.example.demo.app.domain.service.impl;
+
+import org.springframework.stereotype.Service;
+
+import com.example.demo.app.domain.model.GoalModel;
+import com.example.demo.app.domain.service.GoalService;
+import com.example.demo.app.infra.entity.GoalEntity;
+import com.example.demo.app.infra.entity.UserEntity;
+import com.example.demo.app.infra.repository.GoalRepository;
+import com.example.demo.app.infra.repository.UserRepository;
+
+import lombok.RequiredArgsConstructor;
+
+@Service
+@RequiredArgsConstructor
+public class GoalServiceImpl implements GoalService {
+
+	private final GoalRepository goalRepository;
+	private final UserRepository userRepository;
+
+	@Override
+	public GoalModel getGoalById(Long goalId) {
+		GoalEntity goalEntity = goalRepository.findById(goalId).orElse(null);
+		return GoalModel.convertFrom(goalEntity);
+	}
+
+	@Override
+	public GoalModel getGoalByUserId(Long userId) {
+
+		UserEntity userEntity = userRepository.findById(userId).orElseThrow();
+		GoalEntity goalEntity = userEntity.getGoalEntity();
+		return GoalModel.convertFrom(goalEntity);
+	}
+
+	@Override
+	public GoalModel createGoal(GoalModel goalModel) {
+
+		GoalEntity goalEntity = GoalModel.convertTo(goalModel);
+
+		GoalEntity savedGoalEntity = goalRepository.save(goalEntity);
+
+		return GoalModel.convertFrom(savedGoalEntity);
+	}
+
+	@Override
+	public GoalModel updateGoal(GoalModel goalModel) {
+
+		GoalEntity goalEntity = GoalModel.convertTo(goalModel);
+
+		GoalEntity updatedGoalEntity = goalRepository.save(goalEntity);
+
+		return GoalModel.convertFrom(updatedGoalEntity);
+	}
+
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/demo/app/infra/entity/GoalEntity.java b/src/main/java/com/example/demo/app/infra/entity/GoalEntity.java
index f4bbe50..2996fe6 100644
--- a/src/main/java/com/example/demo/app/infra/entity/GoalEntity.java
+++ b/src/main/java/com/example/demo/app/infra/entity/GoalEntity.java
@@ -38,7 +38,7 @@ public class GoalEntity {
 	@Column(name = "deadline", nullable = false)
 	private LocalDate deadline;
 	
-	@Column(name = "goal_complete", nullable = false)
+	@Column(name = "goal_complete", nullable = true)
 	private Integer goalComplete;
 	
 	@OneToOne(mappedBy = "goalEntity")
diff --git a/src/main/java/com/example/demo/app/presentation/controller/GoalController.java b/src/main/java/com/example/demo/app/presentation/controller/GoalController.java
new file mode 100644
index 0000000..827e05b
--- /dev/null
+++ b/src/main/java/com/example/demo/app/presentation/controller/GoalController.java
@@ -0,0 +1,81 @@
+package com.example.demo.app.presentation.controller;
+
+import jakarta.servlet.http.HttpSession;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import com.example.demo.app.domain.model.GoalModel;
+import com.example.demo.app.domain.model.LoginModel;
+import com.example.demo.app.domain.service.GoalService;
+import com.example.demo.app.presentation.form.GoalForm;
+
+import lombok.RequiredArgsConstructor;
+
+@Controller
+@RequiredArgsConstructor
+@RequestMapping("/goal")
+public class GoalController {
+
+	private final GoalService goalService;
+
+	@GetMapping("")
+	public String getGoal(Model model, HttpSession session) {
+
+		LoginModel loginUser = (LoginModel) session.getAttribute("loginUser");
+		
+		Long userId = loginUser.getUserId();
+		//テスト用
+//		Long userId = 1L;
+		
+		GoalModel goalModel = goalService.getGoalByUserId(userId);
+		GoalForm goalForm = GoalForm.convertFrom(goalModel);
+
+		model.addAttribute("goalForm", goalForm);
+		return "goal_view";
+	}
+
+	@GetMapping("/edit")
+	public String editGoal(Model model, HttpSession session) {
+
+		LoginModel loginUser = (LoginModel) session.getAttribute("loginUser");
+		Long userId = loginUser.getUserId();
+		
+		//テスト用
+//		Long userId = 1L;		
+
+		GoalModel goalModel = goalService.getGoalByUserId(userId);
+		GoalForm goalForm = GoalForm.convertFrom(goalModel);
+
+		model.addAttribute("goalForm", goalForm);
+		return "goal_edit";
+	}
+
+	@PostMapping("/update")
+	public String updateGoal(@ModelAttribute GoalForm goalForm, HttpSession session) {
+
+		LoginModel loginUser = (LoginModel) session.getAttribute("loginUser");
+
+		Long userId = loginUser.getUserId();
+		//テスト用
+//		Long userId = 1L;
+				
+		
+		// 本人の目標かどうかを確認してから更新する
+		GoalModel currentGoal = goalService.getGoalByUserId(userId);
+
+		if (!currentGoal.getGoalId().equals(goalForm.getGoalId())) {
+			return "redirect:/goal"; // 他人のデータを更新しようとしたら弾く
+		}
+
+		GoalModel goalModel = GoalModel.convertFrom(goalForm);
+		goalService.updateGoal(goalModel);
+
+		return "redirect:/goal";
+	}
+
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/demo/app/presentation/form/GoalForm.java b/src/main/java/com/example/demo/app/presentation/form/GoalForm.java
new file mode 100644
index 0000000..42e5368
--- /dev/null
+++ b/src/main/java/com/example/demo/app/presentation/form/GoalForm.java
@@ -0,0 +1,42 @@
+package com.example.demo.app.presentation.form;
+
+import java.time.LocalDate;
+
+import com.example.demo.app.domain.model.GoalModel;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class GoalForm {
+
+	private Long goalId;
+
+	private String goalTitle;
+
+	private String goalSubtitle;
+
+	private Integer targetAmount;
+
+	private LocalDate deadline;
+
+	private Integer goalComplete;
+
+	public static GoalForm convertFrom(GoalModel goalModel) {
+		return new GoalForm(
+				goalModel.getGoalId(),
+				goalModel.getGoalTitle(),
+				goalModel.getGoalSubtitle(),
+				goalModel.getTargetAmount(),
+				goalModel.getDeadline(),
+				goalModel.getGoalComplete());
+	}
+
+//	public static List<GoalForm> convertFrom(List<GoalModel> goalModelList) {
+//		return goalModelList.stream().map(GoalForm::convertFrom).toList();
+//	}
+
+}
\ No newline at end of file
diff --git a/src/main/resources/templates/goal_edit.html b/src/main/resources/templates/goal_edit.html
new file mode 100644
index 0000000..0d3601e
--- /dev/null
+++ b/src/main/resources/templates/goal_edit.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+	<meta charset="UTF-8">
+	<title>目標編集</title>
+</head>
+<body>
+
+	<h1>目標編集</h1>
+
+	<form th:action="@{/goal/update}" th:object="${goalForm}" method="post">
+		<input type="hidden" th:field="*{goalId}">
+
+		<div>
+			<label>目標名</label>
+			<input type="text" th:field="*{goalTitle}">
+		</div>
+
+		<div>
+			<label>目標説明</label>
+			<textarea th:field="*{goalSubtitle}"></textarea>
+		</div>
+
+		<div>
+			<label>目標金額</label>
+			<input type="number" th:field="*{targetAmount}">
+		</div>
+
+		<div>
+			<label>目標達成期限</label>
+			<input type="date" th:field="*{deadline}">
+		</div>
+		<button type="submit">更新する</button>
+
+	</form>
+
+</body>
+</html>
\ No newline at end of file
diff --git a/src/main/resources/templates/goal_view.html b/src/main/resources/templates/goal_view.html
new file mode 100644
index 0000000..348f7e4
--- /dev/null
+++ b/src/main/resources/templates/goal_view.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+	<meta charset="UTF-8">
+	<title>目標詳細</title>
+</head>
+<body>
+
+	<h1>目標詳細</h1>
+
+	<table>
+
+		<tr>
+			<th>目標名</th>
+			<td th:text="${goalForm.goalTitle}"></td>
+		</tr>
+				
+		<tr>
+			<th>目標説明</th>
+			<td th:text="${goalForm.goalSubtitle}"></td>
+		</tr>
+		<tr>
+			<th>目標金額</th>
+			<td th:text="${goalForm.targetAmount}"></td>
+		</tr>
+		<tr>
+			<th>目標達成期限</th>
+			<td th:text="${goalForm.deadline}"></td>
+		</tr>
+	</table>
+
+	<a th:href="@{/goal/edit}">編集する</a>
+	
+</body>
+</html>
\ No newline at end of file