diff --git a/backend/migrations/20240517220834-create-users.js b/backend/migrations/20240201220834-create-users.js
similarity index 100%
rename from backend/migrations/20240517220834-create-users.js
rename to backend/migrations/20240201220834-create-users.js
diff --git a/backend/migrations/20240204090345-create-projects.js b/backend/migrations/20240204090345-create-projects.js
index 3096a37..4fbf7a9 100644
--- a/backend/migrations/20240204090345-create-projects.js
+++ b/backend/migrations/20240204090345-create-projects.js
@@ -17,6 +17,20 @@ module.exports = {
         type: Sequelize.STRING,
         allowNull: true,
       },
+      isPublic: {
+        type: Sequelize.BOOLEAN,
+        allowNull: false,
+      },
+      userId: {
+        type: Sequelize.INTEGER,
+        allowNull: false,
+        references: {
+          model: 'users',
+          key: 'id',
+          onDelete: 'CASCADE',
+          onUpdate: 'CASCADE',
+        },
+      },
       createdAt: {
         type: Sequelize.DATE,
         allowNull: false,
diff --git a/backend/models/projects.js b/backend/models/projects.js
index 2f85d75..c56293e 100644
--- a/backend/models/projects.js
+++ b/backend/models/projects.js
@@ -8,6 +8,19 @@ function defineProject(sequelize, DataTypes) {
       type: DataTypes.STRING,
       allowNull: true,
     },
+    isPublic: {
+      type: DataTypes.BOOLEAN,
+      allowNull: false,
+    },
+    userId: {
+      type: DataTypes.INTEGER,
+      allowNull: false,
+      references: {
+        model: 'user',
+        key: 'id',
+      },
+      onDelete: 'CASCADE',
+    },
   });
 
   Project.associate = (models) => {
diff --git a/backend/models/users.js b/backend/models/users.js
index 42c473c..53d5273 100644
--- a/backend/models/users.js
+++ b/backend/models/users.js
@@ -22,9 +22,9 @@ function defineUser(sequelize, DataTypes) {
     },
   });
 
-  // User.associate = (models) => {
-  //   User.hasMany(models.Project, { foreignKey: "userId" });
-  // };
+  User.associate = (models) => {
+    User.hasMany(models.Project, { foreignKey: 'userId' });
+  };
 
   return User;
 }
diff --git a/backend/routes/projects/edit.js b/backend/routes/projects/edit.js
index d6b7f5c..a8c2a33 100644
--- a/backend/routes/projects/edit.js
+++ b/backend/routes/projects/edit.js
@@ -8,7 +8,7 @@ module.exports = function (sequelize) {
 
   router.put('/:projectId', async (req, res) => {
     const projectId = req.params.projectId;
-    const { name, detail } = req.body;
+    const { name, detail, isPublic } = req.body;
     try {
       const project = await Project.findByPk(projectId);
       if (!project) {
@@ -17,6 +17,7 @@ module.exports = function (sequelize) {
       await project.update({
         name,
         detail,
+        isPublic,
       });
       res.json(project);
     } catch (error) {
diff --git a/backend/routes/projects/new.js b/backend/routes/projects/new.js
index 69f6e0f..503bdd3 100644
--- a/backend/routes/projects/new.js
+++ b/backend/routes/projects/new.js
@@ -8,10 +8,12 @@ module.exports = function (sequelize) {
 
   router.post('/', async (req, res) => {
     try {
-      const { name, detail } = req.body;
+      const { name, detail, isPublic, userId } = req.body;
       const newProject = await Project.create({
         name,
         detail,
+        isPublic,
+        userId,
       });
       res.json(newProject);
     } catch (error) {
diff --git a/backend/seeders/seed.js b/backend/seeders/seed.js
index d0ca6ce..535be73 100644
--- a/backend/seeders/seed.js
+++ b/backend/seeders/seed.js
@@ -1,20 +1,39 @@
 'use strict';
-const path = require('path');
 const fs = require('fs');
+const bcrypt = require('bcrypt');
 
 module.exports = {
   up: async (queryInterface, Sequelize) => {
+    const hashedPassword = await bcrypt.hash('password', 10);
+
+    // Add projects table records
+    await queryInterface.bulkInsert('Users', [
+      {
+        email: 'admin@testplat.com',
+        password: hashedPassword,
+        username: 'Admin',
+        role: 1,
+        avatarPath: null,
+        createdAt: new Date(),
+        updatedAt: new Date(),
+      },
+    ]);
+
     // Add projects table records
     await queryInterface.bulkInsert('Projects', [
       {
         name: 'TestPlat Test',
         detail: "Test Plat's Manual test",
+        userId: 1,
+        isPublic: true,
         createdAt: new Date(),
         updatedAt: new Date(),
       },
       {
         name: 'Iron Muscle App(筋トレアプリ)',
         detail: 'リリース前総合評価',
+        userId: 1,
+        isPublic: true,
         createdAt: new Date(),
         updatedAt: new Date(),
       },
diff --git a/frontend/messages/en.json b/frontend/messages/en.json
index a680fd7..ead6d6d 100644
--- a/frontend/messages/en.json
+++ b/frontend/messages/en.json
@@ -62,11 +62,15 @@
     "actions": "Actions",
     "project_name": "Project Name",
     "project_detail": "Project Detail",
+    "public": "Public",
+    "if_you_make_public": "If you make project public, everyone who has access to this site will be able to view it.",
     "close": "Close",
     "create": "Create",
     "update": "Update",
     "please_enter": "Please enter project name",
-    "no_projects_found": "No projects found"
+    "no_projects_found": "No projects found",
+    "you_need_signed_in": "You need signed in",
+    "sign_in": "Sign in"
   },
   "Project": {
     "home": "Home",
diff --git a/frontend/messages/ja.json b/frontend/messages/ja.json
index cd9827c..5d3473a 100644
--- a/frontend/messages/ja.json
+++ b/frontend/messages/ja.json
@@ -61,11 +61,15 @@
     "actions": "アクション",
     "project_name": "プロジェクト名",
     "project_detail": "プロジェクト詳細",
+    "public": "パブリック",
+    "if_you_make_public": "プロジェクトをパブリックにすると、このサイトにアクセスできるすべてのユーザーがプロジェクトを見ることができます。",
     "close": "閉じる",
     "create": "作成",
     "update": "更新",
     "please_enter": "プロジェクト名を入力してください",
-    "no_projects_found": "プロジェクトがありません"
+    "no_projects_found": "プロジェクトがありません",
+    "you_need_signed_in": "サインインが必要です",
+    "sign_in": "サインイン"
   },
   "Project": {
     "home": "ホーム",
diff --git a/frontend/src/app/[locale]/DropdownAccount.tsx b/frontend/src/app/[locale]/DropdownAccount.tsx
index cfcf847..4a9dd15 100644
--- a/frontend/src/app/[locale]/DropdownAccount.tsx
+++ b/frontend/src/app/[locale]/DropdownAccount.tsx
@@ -5,6 +5,7 @@ import { useContext } from 'react';
 import { TokenContext } from './TokenProvider';
 import { useRouter } from '@/src/navigation';
 import { AccountDropDownMessages } from '@/types/user';
+import Avatar from 'boring-avatars';
 
 type Props = {
   messages: AccountDropDownMessages;
@@ -22,11 +23,23 @@ export default function DropdownAccount({ messages, locale, onItemPress }: Props
     router.push(`/`, { locale: locale });
   };
 
+  let userAvatar =
+    context.token && context.token.user ? (
+      <Avatar
+        size={16}
+        name={context.token.user.username}
+        variant="beam"
+        colors={['#0A0310', '#49007E', '#FF005B', '#FF7D10', '#FFB238']}
+      />
+    ) : (
+      <User size={16} />
+    );
+
   const signinItems = [
     {
       uid: 'account',
       title: messages.account,
-      icon: <User size={16} />,
+      icon: userAvatar,
       onPress: () => {
         router.push('/account', { locale: locale });
         onItemPress();
@@ -67,7 +80,7 @@ export default function DropdownAccount({ messages, locale, onItemPress }: Props
   return (
     <Dropdown>
       <DropdownTrigger>
-        <Button size="sm" variant="light" startContent={<User size={16} />} endContent={<ChevronDown size={16} />}>
+        <Button size="sm" variant="light" startContent={userAvatar} endContent={<ChevronDown size={16} />}>
           {context.token && context.token.user ? context.token.user.username : messages.signIn}
         </Button>
       </DropdownTrigger>
diff --git a/frontend/src/app/[locale]/account/authPage.tsx b/frontend/src/app/[locale]/account/authPage.tsx
index 33b41b1..bad45b7 100644
--- a/frontend/src/app/[locale]/account/authPage.tsx
+++ b/frontend/src/app/[locale]/account/authPage.tsx
@@ -6,7 +6,7 @@ import { Link } from '@/src/navigation';
 import { ChevronRight, Eye, EyeOff } from 'lucide-react';
 import { UserType, AuthMessages } from '@/types/user';
 import { roles } from '@/config/selection';
-import { signUp, signIn, getRandomAvatarPath } from './authControl';
+import { signUp, signIn } from './authControl';
 import { isValidEmail, isValidPassword } from './validate';
 import { TokenContext } from '../TokenProvider';
 import { useRouter } from '@/src/navigation';
diff --git a/frontend/src/app/[locale]/projects/NeedSignedInDialog.tsx b/frontend/src/app/[locale]/projects/NeedSignedInDialog.tsx
new file mode 100644
index 0000000..91ebb07
--- /dev/null
+++ b/frontend/src/app/[locale]/projects/NeedSignedInDialog.tsx
@@ -0,0 +1,31 @@
+'use client';
+import { ProjectsMessages } from '@/types/project';
+import { Link } from '@/src/navigation';
+import { Button, Modal, ModalContent, ModalHeader, ModalFooter } from '@nextui-org/react';
+
+type Props = {
+  isOpen: boolean;
+  onCancel: () => void;
+  messages: ProjectsMessages;
+  locale: string;
+};
+
+export default function NeedSignedInDialog({ isOpen, onCancel, messages, locale }: Props) {
+  return (
+    <Modal
+      isOpen={isOpen}
+      onOpenChange={() => {
+        onCancel();
+      }}
+    >
+      <ModalContent>
+        <ModalHeader className="flex flex-col gap-1">{messages.needSignedIn}</ModalHeader>
+        <ModalFooter>
+          <Link href={'/account/signin'} locale={locale}>
+            <Button color="primary">{messages.signIn}</Button>
+          </Link>
+        </ModalFooter>
+      </ModalContent>
+    </Modal>
+  );
+}
diff --git a/frontend/src/app/[locale]/projects/ProjectDialog.tsx b/frontend/src/app/[locale]/projects/ProjectDialog.tsx
index ad9054e..b9e9dc0 100644
--- a/frontend/src/app/[locale]/projects/ProjectDialog.tsx
+++ b/frontend/src/app/[locale]/projects/ProjectDialog.tsx
@@ -1,14 +1,24 @@
 'use client';
 import React from 'react';
 import { useState, useEffect } from 'react';
-import { Button, Input, Textarea, Modal, ModalContent, ModalHeader, ModalBody, ModalFooter } from '@nextui-org/react';
+import {
+  Button,
+  Input,
+  Textarea,
+  Checkbox,
+  Modal,
+  ModalContent,
+  ModalHeader,
+  ModalBody,
+  ModalFooter,
+} from '@nextui-org/react';
 import { ProjectType, ProjectsMessages } from '@/types/project';
 
 type Props = {
   isOpen: boolean;
   editingProject: ProjectType;
   onCancel: () => void;
-  onSubmit: (name: string, detail: string) => void;
+  onSubmit: (name: string, detail: string, isPublic: boolean) => void;
   messages: ProjectsMessages;
 };
 
@@ -25,6 +35,8 @@ export default function ProjectDialog({ isOpen, editingProject, onCancel, onSubm
     errorMessage: '',
   });
 
+  const [isProjectPublic, setIsProjectPublic] = useState(editingProject ? editingProject.isPublic : true);
+
   useEffect(() => {
     if (editingProject) {
       setProjectName({
@@ -36,6 +48,8 @@ export default function ProjectDialog({ isOpen, editingProject, onCancel, onSubm
         ...projectDetail,
         text: editingProject.detail ? editingProject.detail : '',
       });
+
+      setIsProjectPublic(editingProject.isPublic);
     } else {
       setProjectName({
         ...projectName,
@@ -46,6 +60,8 @@ export default function ProjectDialog({ isOpen, editingProject, onCancel, onSubm
         ...projectDetail,
         text: '',
       });
+
+      setIsProjectPublic(true);
     }
   }, [editingProject]);
 
@@ -73,7 +89,7 @@ export default function ProjectDialog({ isOpen, editingProject, onCancel, onSubm
       return;
     }
 
-    onSubmit(projectName.text, projectDetail.text);
+    onSubmit(projectName.text, projectDetail.text, isProjectPublic);
     clear();
   };
 
@@ -112,6 +128,10 @@ export default function ProjectDialog({ isOpen, editingProject, onCancel, onSubm
               });
             }}
           />
+          <Checkbox isSelected={isProjectPublic} onValueChange={setIsProjectPublic}>
+            {messages.public}
+          </Checkbox>
+          <div className="text-small text-default-500">{messages.ifYouMakePublic}</div>
         </ModalBody>
         <ModalFooter>
           <Button variant="light" onPress={onCancel}>
diff --git a/frontend/src/app/[locale]/projects/ProjectsPage.tsx b/frontend/src/app/[locale]/projects/ProjectsPage.tsx
index 9ae2559..853d0a3 100644
--- a/frontend/src/app/[locale]/projects/ProjectsPage.tsx
+++ b/frontend/src/app/[locale]/projects/ProjectsPage.tsx
@@ -1,10 +1,12 @@
 'use client';
-import { useEffect, useState } from 'react';
+import { useEffect, useState, useContext } from 'react';
 import { Button } from '@nextui-org/react';
 import { Plus } from 'lucide-react';
+import { TokenContext } from '@/src/app/[locale]/TokenProvider';
 import { ProjectType, ProjectsMessages } from '@/types/project';
 import ProjectsTable from './ProjectsTable';
 import ProjectDialog from './ProjectDialog';
+import NeedSignedInDialog from './NeedSignedInDialog';
 import { fetchProjects, createProject, updateProject, deleteProject } from './projectsControl';
 
 export type Props = {
@@ -13,6 +15,7 @@ export type Props = {
 };
 
 export default function ProjectsPage({ messages, locale }: Props) {
+  const context = useContext(TokenContext);
   const [projects, setProjects] = useState([]);
 
   useEffect(() => {
@@ -29,9 +32,15 @@ export default function ProjectsPage({ messages, locale }: Props) {
   }, []);
 
   // dialog
+  const [isNeedSignedInDialogOpen, setIsNeedSignedInDialogOpen] = useState(false);
   const [isProjectDialogOpen, setIsProjectDialogOpen] = useState(false);
   const [editingProject, setEditingProject] = useState<ProjectType | null>(null);
   const openDialogForCreate = () => {
+    if (!context.token || !context.token.user) {
+      setIsNeedSignedInDialogOpen(true);
+      return;
+    }
+
     setIsProjectDialogOpen(true);
     setEditingProject(null);
   };
@@ -41,13 +50,13 @@ export default function ProjectsPage({ messages, locale }: Props) {
     setEditingProject(null);
   };
 
-  const onSubmit = async (name: string, detail: string) => {
+  const onSubmit = async (name: string, detail: string, isPublic: boolean) => {
     if (editingProject) {
-      const updatedProject = await updateProject(editingProject.id, name, detail);
+      const updatedProject = await updateProject(editingProject.id, name, detail, isPublic);
       const updatedProjects = projects.map((project) => (project.id === updatedProject.id ? updatedProject : project));
       setProjects(updatedProjects);
     } else {
-      const newProject = await createProject(name, detail);
+      const newProject = await createProject(name, detail, isPublic, context.token.user.id);
       setProjects([...projects, newProject]);
     }
     closeDialog();
@@ -93,6 +102,13 @@ export default function ProjectsPage({ messages, locale }: Props) {
         onSubmit={onSubmit}
         messages={messages}
       />
+
+      <NeedSignedInDialog
+        isOpen={isNeedSignedInDialogOpen}
+        onCancel={() => setIsNeedSignedInDialogOpen(false)}
+        messages={messages}
+        locale={locale}
+      />
     </div>
   );
 }
diff --git a/frontend/src/app/[locale]/projects/page.tsx b/frontend/src/app/[locale]/projects/page.tsx
index 4e30027..88bbc21 100644
--- a/frontend/src/app/[locale]/projects/page.tsx
+++ b/frontend/src/app/[locale]/projects/page.tsx
@@ -16,11 +16,15 @@ export default function Page(params: { locale: string }) {
     actions: t('actions'),
     projectName: t('project_name'),
     projectDetail: t('project_detail'),
+    public: t('public'),
+    ifYouMakePublic: t('if_you_make_public'),
     close: t('close'),
     create: t('create'),
     update: t('update'),
     pleaseEnter: t('please_enter'),
     noProjectsFound: t('no_projects_found'),
+    needSignedIn: t('you_need_signed_in'),
+    signIn: t('sign_in'),
   };
   return (
     <>
diff --git a/frontend/src/app/[locale]/projects/projectsControl.ts b/frontend/src/app/[locale]/projects/projectsControl.ts
index 9ac2684..9c724d2 100644
--- a/frontend/src/app/[locale]/projects/projectsControl.ts
+++ b/frontend/src/app/[locale]/projects/projectsControl.ts
@@ -29,10 +29,12 @@ async function fetchProjects() {
 /**
  * Create project
  */
-async function createProject(name: string, detail: string) {
+async function createProject(name: string, detail: string, isPublic: boolean, userId: number) {
   const newProjectData = {
-    name: name,
-    detail: detail,
+    name,
+    detail,
+    isPublic,
+    userId,
   };
 
   const fetchOptions = {
@@ -61,10 +63,11 @@ async function createProject(name: string, detail: string) {
 /**
  * Update project
  */
-async function updateProject(projectId: number, name: string, detail: string) {
+async function updateProject(projectId: number, name: string, detail: string, isPublic: boolean) {
   const updatedProjectData = {
-    name: name,
-    detail: detail,
+    name,
+    detail,
+    isPublic,
   };
 
   const fetchOptions = {
diff --git a/frontend/types/project.ts b/frontend/types/project.ts
index 6d9072e..3533ee8 100644
--- a/frontend/types/project.ts
+++ b/frontend/types/project.ts
@@ -5,6 +5,8 @@ export type ProjectType = {
   id: number;
   name: string;
   detail: string;
+  isPublic: string;
+  userId: number;
   createdAt: string;
   updatedAt: string;
   Folders: FolderType[]; // additional property
@@ -23,11 +25,15 @@ export type ProjectsMessages = {
   actions: string;
   projectName: string;
   projectDetail: string;
+  public: string;
+  ifYouMakePublic: string;
   close: string;
   create: string;
   update: string;
   pleaseEnter: string;
   noProjectsFound: string;
+  needSignedIn: string;
+  signIn: string;
 };
 
 export type ProjectMessages = {