diff --git a/api/user.go b/api/user.go
index a5757e2f..a4db8b3e 100644
--- a/api/user.go
+++ b/api/user.go
@@ -75,6 +75,23 @@ func handleUpdateMyUserInfo(w http.ResponseWriter, r *http.Request) {
 	})
 }
 
+func handleRefreshUserOpenId(w http.ResponseWriter, r *http.Request) {
+	userId, _ := GetUserIdInSession(r)
+
+	openId, err := store.UpdateUserOpenId(userId)
+
+	if err != nil {
+		e.ErrorHandler(w, "DATABASE_ERROR", err.Error())
+		return
+	}
+
+	json.NewEncoder(w).Encode(Response{
+		Succeed: true,
+		Message: "",
+		Data:    openId,
+	})
+}
+
 type CheckUsername struct {
 	Username string
 }
@@ -138,6 +155,7 @@ func RegisterUserRoutes(r *mux.Router) {
 
 	userRouter.HandleFunc("/me", handleGetMyUserInfo).Methods("GET")
 	userRouter.HandleFunc("/me", handleUpdateMyUserInfo).Methods("PATCH")
+	userRouter.HandleFunc("/open_id/new", handleRefreshUserOpenId).Methods("POST")
 	userRouter.HandleFunc("/checkusername", handleCheckUsername).Methods("POST")
 	userRouter.HandleFunc("/validpassword", handleValidPassword).Methods("POST")
 }
diff --git a/resources/initial_db.sql b/resources/initial_db.sql
index 3ed854d5..b62eb404 100644
--- a/resources/initial_db.sql
+++ b/resources/initial_db.sql
@@ -7,6 +7,7 @@ CREATE TABLE `users` (
   `id` TEXT NOT NULL PRIMARY KEY,
   `username` TEXT NOT NULL,
   `password` TEXT NOT NULL,
+  `open_id` TEXT NOT NULL DEFAULT '',
   `github_name` TEXT NOT NULL DEFAULT '',
   `created_at` TEXT NOT NULL DEFAULT (DATETIME('now', 'localtime')),
   `updated_at` TEXT NOT NULL DEFAULT (DATETIME('now', 'localtime')),
diff --git a/resources/memos.db b/resources/memos.db
index f3240385..dcd93ca8 100644
Binary files a/resources/memos.db and b/resources/memos.db differ
diff --git a/store/user.go b/store/user.go
index 8b876bbc..eaa4f8e4 100644
--- a/store/user.go
+++ b/store/user.go
@@ -11,6 +11,7 @@ type User struct {
 	Id         string `json:"id"`
 	Username   string `json:"username"`
 	Password   string `json:"password"`
+	OpenId     string `json:"openId"`
 	GithubName string `json:"githubName"`
 	CreatedAt  string `json:"createdAt"`
 	UpdatedAt  string `json:"updatedAt"`
@@ -22,13 +23,14 @@ func CreateNewUser(username string, password string, githubName string) (User, e
 		Id:         utils.GenUUID(),
 		Username:   username,
 		Password:   password,
+		OpenId:     utils.GenUUID(),
 		GithubName: githubName,
 		CreatedAt:  nowDateTimeStr,
 		UpdatedAt:  nowDateTimeStr,
 	}
 
-	query := `INSERT INTO users (id, username, password, github_name, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?)`
-	_, err := DB.Exec(query, newUser.Id, newUser.Username, newUser.Password, newUser.GithubName, newUser.CreatedAt, newUser.UpdatedAt)
+	query := `INSERT INTO users (id, username, password, open_id, github_name, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?, ?)`
+	_, err := DB.Exec(query, newUser.Id, newUser.Username, newUser.Password, newUser.OpenId, newUser.GithubName, newUser.CreatedAt, newUser.UpdatedAt)
 
 	return newUser, err
 }
@@ -64,24 +66,33 @@ func UpdateUser(id string, userPatch *UserPatch) (User, error) {
 	return user, err
 }
 
+func UpdateUserOpenId(userId string) (string, error) {
+	openId := utils.GenUUID()
+
+	query := `UPDATE users SET open_id=? WHERE id=?`
+	_, err := DB.Exec(query, openId, userId)
+
+	return openId, err
+}
+
 func GetUserById(id string) (User, error) {
-	query := `SELECT id, username, password, github_name, created_at, updated_at FROM users WHERE id=?`
+	query := `SELECT id, username, password, open_id, github_name, created_at, updated_at FROM users WHERE id=?`
 	user := User{}
-	err := DB.QueryRow(query, id).Scan(&user.Id, &user.Username, &user.Password, &user.GithubName, &user.CreatedAt, &user.UpdatedAt)
+	err := DB.QueryRow(query, id).Scan(&user.Id, &user.Username, &user.Password, &user.OpenId, &user.GithubName, &user.CreatedAt, &user.UpdatedAt)
 	return user, err
 }
 
 func GetUserByUsernameAndPassword(username string, password string) (User, error) {
-	query := `SELECT id, username, password, github_name, created_at, updated_at FROM users WHERE username=? AND password=?`
+	query := `SELECT id, username, password, open_id, github_name, created_at, updated_at FROM users WHERE username=? AND password=?`
 	user := User{}
-	err := DB.QueryRow(query, username, password).Scan(&user.Id, &user.Username, &user.Password, &user.GithubName, &user.CreatedAt, &user.UpdatedAt)
+	err := DB.QueryRow(query, username, password).Scan(&user.Id, &user.Username, &user.Password, &user.OpenId, &user.GithubName, &user.CreatedAt, &user.UpdatedAt)
 	return user, err
 }
 
 func GetUserByGithubName(githubName string) (User, error) {
-	query := `SELECT id, username, password, github_name, created_at, updated_at FROM users WHERE github_name=?`
+	query := `SELECT id, username, password, open_id, github_name, created_at, updated_at FROM users WHERE github_name=?`
 	user := User{}
-	err := DB.QueryRow(query, githubName).Scan(&user.Id, &user.Username, &user.Password, &user.GithubName, &user.CreatedAt, &user.UpdatedAt)
+	err := DB.QueryRow(query, githubName).Scan(&user.Id, &user.Username, &user.Password, &user.OpenId, &user.GithubName, &user.CreatedAt, &user.UpdatedAt)
 	return user, err
 }