diff --git a/controller/questionnaire.go b/controller/questionnaire.go
index 34c90ea8..f4707b82 100644
--- a/controller/questionnaire.go
+++ b/controller/questionnaire.go
@@ -879,49 +879,23 @@ func (q *Questionnaire) DeleteQuestionnaire(c echo.Context, questionnaireID int)
 	return nil
 }
 
-func (q *Questionnaire) GetQuestionnaireMyRemindStatus(c echo.Context, questionnaireID int) (bool, error) {
-	status, err := q.CheckRemindStatus(questionnaireID)
+func (q *Questionnaire) GetQuestionnaireMyRemindStatus(c echo.Context, questionnaireID int, userID string) (bool, error) {
+	status, err := q.GetTargetsCancelStatus(c.Request().Context(), questionnaireID, []string{userID})
 	if err != nil {
 		c.Logger().Errorf("failed to check remind status: %+v", err)
 		return false, echo.NewHTTPError(http.StatusInternalServerError, "failed to check remind status")
 	}
 
-	return status, nil
+	return !status[0].IsCanceled, nil
 }
 
-func (q *Questionnaire) EditQuestionnaireMyRemindStatus(c echo.Context, questionnaireID int, isRemindEnabled bool) error {
-	if isRemindEnabled {
-		status, err := q.CheckRemindStatus(questionnaireID)
-		if err != nil {
-			c.Logger().Errorf("failed to check remind status: %+v", err)
-			return echo.NewHTTPError(http.StatusInternalServerError, "failed to check remind status")
-		}
-		if status {
-			return nil
-		}
-
-		questionnaire, _, _, _, _, _, _, _, err := q.GetQuestionnaireInfo(c.Request().Context(), questionnaireID)
-		if err != nil {
-			if errors.Is(err, model.ErrRecordNotFound) {
-				c.Logger().Info("questionnaire not found")
-				return echo.NewHTTPError(http.StatusNotFound, "questionnaire not found")
-			}
-			c.Logger().Errorf("failed to get questionnaire: %+v", err)
-			return echo.NewHTTPError(http.StatusInternalServerError, "failed to get questionnaire")
-		}
-
-		err = q.PushReminder(questionnaireID, &questionnaire.ResTimeLimit.Time)
-		if err != nil {
-			c.Logger().Errorf("failed to push reminder: %+v", err)
-			return echo.NewHTTPError(http.StatusInternalServerError, "failed to push reminder")
-		}
-	} else {
-		err := q.DeleteReminder(questionnaireID)
-		if err != nil {
-			c.Logger().Errorf("failed to delete reminder: %+v", err)
-			return echo.NewHTTPError(http.StatusInternalServerError, "failed to delete reminder")
-		}
+func (q *Questionnaire) EditQuestionnaireMyRemindStatus(c echo.Context, questionnaireID int, userID string, isRemindEnabled bool) error {
+	err := q.UpdateTargetsCancelStatus(c.Request().Context(), questionnaireID, []string{userID}, !isRemindEnabled)
+	if err != nil {
+		c.Logger().Errorf("failed to update remind status: %+v", err)
+		return echo.NewHTTPError(http.StatusInternalServerError, "failed to update remind status")
 	}
+
 	return nil
 }
 
diff --git a/handler/questionnaire.go b/handler/questionnaire.go
index e0194de0..5a8e42b6 100644
--- a/handler/questionnaire.go
+++ b/handler/questionnaire.go
@@ -98,8 +98,14 @@ func (h Handler) DeleteQuestionnaire(ctx echo.Context, questionnaireID openapi.Q
 
 // (GET /questionnaires/{questionnaireID}/myRemindStatus)
 func (h Handler) GetQuestionnaireMyRemindStatus(ctx echo.Context, questionnaireID openapi.QuestionnaireIDInPath) error {
+	userID, err := h.Middleware.GetUserID(ctx)
+	if err != nil {
+		ctx.Logger().Errorf("failed to get userID: %+v", err)
+		return echo.NewHTTPError(http.StatusInternalServerError, fmt.Errorf("failed to get userID: %w", err))
+	}
+
 	res := openapi.QuestionnaireIsRemindEnabled{}
-	status, err := h.Questionnaire.GetQuestionnaireMyRemindStatus(ctx, questionnaireID)
+	status, err := h.Questionnaire.GetQuestionnaireMyRemindStatus(ctx, questionnaireID, userID)
 	if err != nil {
 		ctx.Logger().Errorf("failed to get questionnaire my remind status: %+v", err)
 		return err
@@ -111,13 +117,19 @@ func (h Handler) GetQuestionnaireMyRemindStatus(ctx echo.Context, questionnaireI
 
 // (PATCH /questionnaires/{questionnaireID}/myRemindStatus)
 func (h Handler) EditQuestionnaireMyRemindStatus(ctx echo.Context, questionnaireID openapi.QuestionnaireIDInPath) error {
+	userID, err := h.Middleware.GetUserID(ctx)
+	if err != nil {
+		ctx.Logger().Errorf("failed to get userID: %+v", err)
+		return echo.NewHTTPError(http.StatusInternalServerError, fmt.Errorf("failed to get userID: %w", err))
+	}
+
 	params := openapi.EditQuestionnaireMyRemindStatusJSONRequestBody{}
 	if err := ctx.Bind(&params); err != nil {
 		ctx.Logger().Errorf("failed to bind request body: %+v", err)
 		return echo.NewHTTPError(http.StatusBadRequest, fmt.Errorf("failed to bind request body: %w", err))
 	}
 
-	err := h.Questionnaire.EditQuestionnaireMyRemindStatus(ctx, questionnaireID, params.IsRemindEnabled)
+	err = h.Questionnaire.EditQuestionnaireMyRemindStatus(ctx, questionnaireID, userID, params.IsRemindEnabled)
 	if err != nil {
 		ctx.Logger().Errorf("failed to edit questionnaire my remind status: %+v", err)
 		return err
diff --git a/model/targets.go b/model/targets.go
index e6d4cc17..75e86403 100644
--- a/model/targets.go
+++ b/model/targets.go
@@ -10,5 +10,6 @@ type ITarget interface {
 	DeleteTargets(ctx context.Context, questionnaireID int) error
 	GetTargets(ctx context.Context, questionnaireIDs []int) ([]Targets, error)
 	IsTargetingMe(ctx context.Context, quesionnairID int, userID string) (bool, error)
-	CancelTargets(ctx context.Context, questionnaireID int, targets []string) error
+	GetTargetsCancelStatus(ctx context.Context, questionnaireID int, targets []string) ([]Targets, error)
+	UpdateTargetsCancelStatus(ctx context.Context, questionnaireID int, targets []string, cancelStatus bool) error
 }
diff --git a/model/targets_impl.go b/model/targets_impl.go
index 929a7df9..b6131a66 100644
--- a/model/targets_impl.go
+++ b/model/targets_impl.go
@@ -104,8 +104,27 @@ func (*Target) IsTargetingMe(ctx context.Context, questionnairID int, userID str
 	return false, nil
 }
 
-// CancelTargets アンケートの対象をキャンセル(削除しない)
-func (*Target) CancelTargets(ctx context.Context, questionnaireID int, targets []string) error {
+func (*Target) GetTargetsCancelStatus(ctx context.Context, questionnaireID int, targets []string) ([]Targets, error) {
+	db, err := getTx(ctx)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get transaction: %w", err)
+	}
+
+	var cancelStatus []Targets
+	err = db.
+		Where("questionnaire_id = ? AND user_traqid IN (?)", questionnaireID, targets).
+		Find(&cancelStatus).Error
+	if err != nil {
+		return nil, fmt.Errorf("failed to get targets remind status: %w", err)
+	}
+	if len(cancelStatus) != len(targets) {
+		return nil, fmt.Errorf("not all targets found")
+	}
+
+	return cancelStatus, nil
+}
+
+func (*Target) UpdateTargetsCancelStatus(ctx context.Context, questionnaireID int, targets []string, cancelStatus bool) error {
 	db, err := getTx(ctx)
 	if err != nil {
 		return fmt.Errorf("failed to get transaction: %w", err)
@@ -114,7 +133,7 @@ func (*Target) CancelTargets(ctx context.Context, questionnaireID int, targets [
 	err = db.
 		Model(&Targets{}).
 		Where("questionnaire_id = ? AND user_traqid IN (?)", questionnaireID, targets).
-		Update("is_canceled", true).Error
+		Update("is_canceled", cancelStatus).Error
 	if err != nil {
 		return fmt.Errorf("failed to cancel targets: %w", err)
 	}
diff --git a/model/targets_test.go b/model/targets_test.go
index e320c541..9ce0fea9 100644
--- a/model/targets_test.go
+++ b/model/targets_test.go
@@ -3,6 +3,7 @@ package model
 import (
 	"context"
 	"errors"
+	"sort"
 	"testing"
 	"time"
 
@@ -377,9 +378,137 @@ func TestIsTargetingMe(t *testing.T) {
 	}
 }
 
-func TestCancelTargets(t *testing.T) {
+func TestGetTargetsCancelStatus(t *testing.T) {
 	t.Parallel()
 
+	assertion := assert.New(t)
+
+	ctx := context.Background()
+
+	type test struct {
+		description     string
+		validTargets    []string // is_canceled = false
+		invalidTargets  []string // is_canceled = true
+		argTargets      []string
+		argTargetsValid []bool
+		isErr           bool
+		err             error
+	}
+
+	testCases := []test{
+		{
+			description:     "all valid targets",
+			validTargets:    []string{"a", "b"},
+			invalidTargets:  []string{},
+			argTargets:      []string{"a"},
+			argTargetsValid: []bool{true},
+		},
+		{
+			description:     "all invalid targets",
+			validTargets:    []string{},
+			invalidTargets:  []string{"a", "b"},
+			argTargets:      []string{"b"},
+			argTargetsValid: []bool{false},
+		},
+		{
+			description:     "both valid and invalid targets",
+			validTargets:    []string{"a", "b"},
+			invalidTargets:  []string{"c", "d"},
+			argTargets:      []string{"a", "c"},
+			argTargetsValid: []bool{true, false},
+		},
+		{
+			description:     "both valid and invalid targets changed order",
+			validTargets:    []string{"a", "b"},
+			invalidTargets:  []string{"c", "d"},
+			argTargets:      []string{"b", "a", "d"},
+			argTargetsValid: []bool{true, true, false},
+		},
+		{
+			description:     "both valid and invalid targets changed order",
+			validTargets:    []string{"a", "b"},
+			invalidTargets:  []string{"c", "d"},
+			argTargets:      []string{"b", "d", "a"},
+			argTargetsValid: []bool{true, false, true},
+		},
+		{
+			description:    "argTargets with target not in db",
+			validTargets:   []string{"a", "b"},
+			invalidTargets: []string{"c", "d"},
+			argTargets:     []string{"e"},
+			isErr:          true,
+		},
+		{
+			description:    "argTargets with some of target not in db",
+			validTargets:   []string{"a", "b"},
+			invalidTargets: []string{"c", "d"},
+			argTargets:     []string{"a", "e"},
+			isErr:          true,
+		},
+	}
+
+	for _, testCase := range testCases {
+		t.Run(testCase.description, func(t *testing.T) {
+			targets := make([]Targets, 0, len(testCase.validTargets)+len(testCase.invalidTargets))
+			for _, target := range testCase.validTargets {
+				targets = append(targets, Targets{
+					UserTraqid: target,
+					IsCanceled: false,
+				})
+			}
+			for _, target := range testCase.invalidTargets {
+				targets = append(targets, Targets{
+					UserTraqid: target,
+					IsCanceled: true,
+				})
+			}
+			questionnaire := Questionnaires{
+				Targets: targets,
+			}
+			err := db.
+				Session(&gorm.Session{}).
+				Create(&questionnaire).Error
+			if err != nil {
+				t.Errorf("failed to create questionnaire: %v", err)
+			}
+
+			cancelStatus, err := targetImpl.GetTargetsCancelStatus(ctx, questionnaire.ID, testCase.argTargets)
+			if !testCase.isErr {
+				assertion.NoError(err, testCase.description, "no error")
+			} else if testCase.err != nil {
+				assertion.Equal(true, errors.Is(err, testCase.err), testCase.description, "errorIs")
+			} else {
+				assertion.Error(err, testCase.description, "any error")
+			}
+			if err != nil {
+				return
+			}
+
+			var actualCancelStatus []Targets
+			for i := range testCase.argTargets {
+				actualCancelStatus = append(actualCancelStatus, Targets{
+					QuestionnaireID: questionnaire.ID,
+					UserTraqid:      testCase.argTargets[i],
+					IsCanceled:      !testCase.argTargetsValid[i],
+				})
+			}
+
+			sort.Slice(cancelStatus, func(i, j int) bool {
+				return cancelStatus[i].UserTraqid < cancelStatus[j].UserTraqid
+			})
+			sort.Slice(actualCancelStatus, func(i, j int) bool {
+				return actualCancelStatus[i].UserTraqid < actualCancelStatus[j].UserTraqid
+			})
+			assert.Equal(t, cancelStatus, actualCancelStatus, testCase.description, "cancelStatus")
+		})
+	}
+}
+
+func TestUpdateTargetsCancelStatus(t *testing.T) {
+	t.Parallel()
+
+	assertion := assert.New(t)
+
 	ctx := context.Background()
 
 	type test struct {
@@ -388,7 +517,8 @@ func TestCancelTargets(t *testing.T) {
 		beforeInvalidTargets []string
 		afterValidTargets    []string
 		afterInvalidTargets  []string
-		argCancelTargets     []string
+		argUpdateTargets     []string
+		argCancelStatus      bool
 		isErr                bool
 		err                  error
 	}
@@ -400,7 +530,8 @@ func TestCancelTargets(t *testing.T) {
 			beforeInvalidTargets: []string{},
 			afterValidTargets:    []string{},
 			afterInvalidTargets:  []string{"a"},
-			argCancelTargets:     []string{"a"},
+			argUpdateTargets:     []string{"a"},
+			argCancelStatus:      true,
 		},
 		{
 			description:          "キャンセルするtargetが複数でエラーなし",
@@ -408,7 +539,8 @@ func TestCancelTargets(t *testing.T) {
 			beforeInvalidTargets: []string{},
 			afterValidTargets:    []string{},
 			afterInvalidTargets:  []string{"a", "b"},
-			argCancelTargets:     []string{"a", "b"},
+			argUpdateTargets:     []string{"a", "b"},
+			argCancelStatus:      true,
 		},
 		{
 			description:          "キャンセルするtargetがないときエラーなし",
@@ -416,16 +548,44 @@ func TestCancelTargets(t *testing.T) {
 			beforeInvalidTargets: []string{},
 			afterValidTargets:    []string{"a"},
 			afterInvalidTargets:  []string{},
-			argCancelTargets:     []string{},
+			argUpdateTargets:     []string{},
+			argCancelStatus:      true,
 		},
 		{
-			description:          "キャンセルするtargetが見つからないときエラー",
+			description:          "キャンセルするtargetが見つからないときエラーなし",
 			beforeValidTargets:   []string{"a"},
 			beforeInvalidTargets: []string{},
 			afterValidTargets:    []string{"a"},
 			afterInvalidTargets:  []string{},
-			argCancelTargets:     []string{"b"},
-			isErr:                true,
+			argUpdateTargets:     []string{"b"},
+			argCancelStatus:      true,
+		},
+		{
+			description:          "再開するtargetが1人でエラーなし",
+			beforeValidTargets:   []string{"a"},
+			beforeInvalidTargets: []string{"b"},
+			afterValidTargets:    []string{"a", "b"},
+			afterInvalidTargets:  []string{},
+			argUpdateTargets:     []string{"b"},
+			argCancelStatus:      false,
+		},
+		{
+			description:          "再開するtargetが複数でエラーなし",
+			beforeValidTargets:   []string{},
+			beforeInvalidTargets: []string{"a", "b"},
+			afterValidTargets:    []string{"a", "b"},
+			afterInvalidTargets:  []string{},
+			argUpdateTargets:     []string{"a", "b"},
+			argCancelStatus:      false,
+		},
+		{
+			description:          "再開するtargetがないときエラーなし",
+			beforeValidTargets:   []string{"a"},
+			beforeInvalidTargets: []string{},
+			afterValidTargets:    []string{"a"},
+			afterInvalidTargets:  []string{},
+			argUpdateTargets:     []string{},
+			argCancelStatus:      false,
 		},
 	}
 
@@ -454,13 +614,15 @@ func TestCancelTargets(t *testing.T) {
 				t.Errorf("failed to create questionnaire: %v", err)
 			}
 
-			err = targetImpl.CancelTargets(ctx, questionnaire.ID, testCase.argCancelTargets)
+			err = targetImpl.UpdateTargetsCancelStatus(ctx, questionnaire.ID, testCase.argUpdateTargets, testCase.argCancelStatus)
+			if !testCase.isErr {
+				assertion.NoError(err, testCase.description, "no error")
+			} else if testCase.err != nil {
+				assertion.Equal(true, errors.Is(err, testCase.err), testCase.description, "errorIs")
+			} else {
+				assertion.Error(err, testCase.description, "any error")
+			}
 			if err != nil {
-				if !testCase.isErr {
-					t.Errorf("unexpected error: %v", err)
-				} else if !errors.Is(err, testCase.err) {
-					t.Errorf("invalid error: expected: %+v, actual: %+v", testCase.err, err)
-				}
 				return
 			}