diff --git a/server/trigger/config.go b/server/trigger/config.go
index fce8e3643..3a336864d 100644
--- a/server/trigger/config.go
+++ b/server/trigger/config.go
@@ -38,5 +38,7 @@ type Config struct {
 	// var client read event from segment batch size.
 	PullEventBatchSize int `yaml:"pull_event_batch_size"`
 	// max uack event number
-	MaxUACKEventNumber int `yaml:"max_uack_event_number"`
+	MaxUACKEventNumber int   `yaml:"max_uack_event_number"`
+	DisableDeadLetter  *bool `yaml:"disable_dead_letter"`
+	OrderEvent         *bool `yaml:"order_event"`
 }
diff --git a/server/trigger/trigger/trigger.go b/server/trigger/trigger/trigger.go
index 42a854350..42262fd30 100644
--- a/server/trigger/trigger/trigger.go
+++ b/server/trigger/trigger/trigger.go
@@ -499,7 +499,9 @@ func (t *trigger) writeEventToRetry(ctx context.Context, e *ce.Event, attempts i
 	for {
 		writeAttempt++
 		startTime := time.Now()
-		_, err := api.AppendOne(ctx, t.timerEventWriter, e)
+		timeoutCtx, cancel := context.WithTimeout(ctx, t.getConfig().DeliveryTimeout)
+		_, err := api.AppendOne(timeoutCtx, t.timerEventWriter, e)
+		cancel()
 		metrics.TriggerRetryEventAppendSecond.WithLabelValues(t.subscriptionIDStr).
 			Observe(time.Since(startTime).Seconds())
 		if err != nil {
@@ -534,7 +536,9 @@ func (t *trigger) writeEventToDeadLetter(ctx context.Context, e *ce.Event, reaso
 	for {
 		writeAttempt++
 		startTime := time.Now()
-		_, err := api.AppendOne(ctx, t.dlEventWriter, e)
+		timeoutCtx, cancel := context.WithTimeout(ctx, t.getConfig().DeliveryTimeout)
+		_, err := api.AppendOne(timeoutCtx, t.dlEventWriter, e)
+		cancel()
 		metrics.TriggerDeadLetterEventAppendSecond.WithLabelValues(t.subscriptionIDStr).
 			Observe(time.Since(startTime).Seconds())
 		if err != nil {
diff --git a/server/trigger/worker.go b/server/trigger/worker.go
index 866c4c795..22c6e4e38 100644
--- a/server/trigger/worker.go
+++ b/server/trigger/worker.go
@@ -253,11 +253,20 @@ func (w *worker) getAllSubscriptionInfo(ctx context.Context) []*metapb.Subscript
 func (w *worker) getTriggerOptions(subscription *primitive.Subscription) []trigger.Option {
 	opts := []trigger.Option{trigger.WithControllers(w.config.ControllerAddr)}
 	config := subscription.Config
+	// todo use subscription config replace global config
+	disableDeadLetter := config.DisableDeadLetter
+	if w.config.DisableDeadLetter != nil {
+		disableDeadLetter = *w.config.DisableDeadLetter
+	}
+	orderEvent := config.OrderedEvent
+	if w.config.OrderEvent != nil {
+		orderEvent = *w.config.OrderEvent
+	}
 	opts = append(opts, trigger.WithRateLimit(config.RateLimit),
 		trigger.WithDeliveryTimeout(config.DeliveryTimeout),
 		trigger.WithMaxRetryAttempts(config.GetMaxRetryAttempts()),
-		trigger.WithDisableDeadLetter(config.DisableDeadLetter),
-		trigger.WithOrdered(config.OrderedEvent),
+		trigger.WithDisableDeadLetter(disableDeadLetter),
+		trigger.WithOrdered(orderEvent),
 		trigger.WithGoroutineSize(w.config.SendEventGoroutineSize),
 		trigger.WithSendBatchSize(w.config.SendEventBatchSize),
 		trigger.WithPullBatchSize(w.config.PullEventBatchSize),