diff --git a/cloudevents-server/pkg/events/custom/tekton/handler_pipelinerun.go b/cloudevents-server/pkg/events/custom/tekton/handler_pipelinerun.go
index 5257cf6..0d083b3 100644
--- a/cloudevents-server/pkg/events/custom/tekton/handler_pipelinerun.go
+++ b/cloudevents-server/pkg/events/custom/tekton/handler_pipelinerun.go
@@ -2,6 +2,7 @@ package tekton
 
 import (
 	"net/http"
+	"strings"
 
 	"github.com/PingCAP-QE/ee-apps/cloudevents-server/pkg/config"
 	cloudevents "github.com/cloudevents/sdk-go/v2"
@@ -51,6 +52,11 @@ func (h *pipelineRunHandler) Handle(event cloudevents.Event) cloudevents.Result
 			receivers = append(h.Receivers[defaultReceiversKey], h.Receivers[event.Type()]...)
 		}
 
+		log.Debug().
+			Str("ce-type", event.Type()).
+			Str("receivers", strings.Join(receivers, ",")).
+			Msg("send notification for the event type.")
+
 		return sendLarkMessages(h.LarkClient, receivers, event, h.DashboardBaseURL)
 	default:
 		log.Debug().Str("ce-type", event.Type()).Msg("skip notifing for the event type.")
diff --git a/cloudevents-server/pkg/events/custom/tekton/handler_taskrun.go b/cloudevents-server/pkg/events/custom/tekton/handler_taskrun.go
index 0f05dfc..c0d4a23 100644
--- a/cloudevents-server/pkg/events/custom/tekton/handler_taskrun.go
+++ b/cloudevents-server/pkg/events/custom/tekton/handler_taskrun.go
@@ -2,6 +2,7 @@ package tekton
 
 import (
 	"net/http"
+	"strings"
 
 	"github.com/PingCAP-QE/ee-apps/cloudevents-server/pkg/config"
 	cloudevents "github.com/cloudevents/sdk-go/v2"
@@ -41,6 +42,11 @@ func (h *taskRunHandler) Handle(event cloudevents.Event) cloudevents.Result {
 			receivers = append(h.Receivers[defaultReceiversKey], h.Receivers[event.Type()]...)
 		}
 
+		log.Debug().
+			Str("ce-type", event.Type()).
+			Str("receivers", strings.Join(receivers, ",")).
+			Msg("send notification for the event type.")
+
 		return sendLarkMessages(h.LarkClient, receivers, event, h.DashboardBaseURL)
 	default:
 		log.Debug().Str("ce-type", event.Type()).Msg("skip notifing for the event type.")