diff --git a/config/crds/troubleshoot.sh_analyzers.yaml b/config/crds/troubleshoot.sh_analyzers.yaml
index 42bd1a19d..680e60d6d 100644
--- a/config/crds/troubleshoot.sh_analyzers.yaml
+++ b/config/crds/troubleshoot.sh_analyzers.yaml
@@ -616,6 +616,7 @@ spec:
                       required:
                       - collectorName
                       - outcomes
+                      - reason
                       type: object
                     goldpinger:
                       properties:
diff --git a/config/crds/troubleshoot.sh_preflights.yaml b/config/crds/troubleshoot.sh_preflights.yaml
index 50f30a2ae..1663d2026 100644
--- a/config/crds/troubleshoot.sh_preflights.yaml
+++ b/config/crds/troubleshoot.sh_preflights.yaml
@@ -616,6 +616,7 @@ spec:
                       required:
                       - collectorName
                       - outcomes
+                      - reason
                       type: object
                     goldpinger:
                       properties:
diff --git a/config/crds/troubleshoot.sh_supportbundles.yaml b/config/crds/troubleshoot.sh_supportbundles.yaml
index 8a4c81fb7..6e2e66ac8 100644
--- a/config/crds/troubleshoot.sh_supportbundles.yaml
+++ b/config/crds/troubleshoot.sh_supportbundles.yaml
@@ -647,6 +647,7 @@ spec:
                       required:
                       - collectorName
                       - outcomes
+                      - reason
                       type: object
                     goldpinger:
                       properties:
diff --git a/pkg/analyze/event.go b/pkg/analyze/event.go
index bda910279..b3aabf9e6 100644
--- a/pkg/analyze/event.go
+++ b/pkg/analyze/event.go
@@ -1,12 +1,14 @@
 package analyzer
 
 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"path"
 	"regexp"
 	"strconv"
 	"strings"
+	"text/template"
 
 	"github.com/pkg/errors"
 	troubleshootv1beta2 "github.com/replicatedhq/troubleshoot/pkg/apis/troubleshoot/v1beta2"
@@ -40,6 +42,11 @@ func (a *AnalyzeEvent) IsExcluded() (bool, error) {
 }
 
 func (a *AnalyzeEvent) Analyze(getFile getCollectedFileContents, findFiles getChildCollectedFileContents) ([]*AnalyzeResult, error) {
+	// required check
+	if a.analyzer.Reason == "" {
+		return nil, errors.New("reason is required")
+	}
+
 	// read collected events based on namespace
 	namespace := getNamespace(a.analyzer.Namespace)
 	fullPath := path.Join(constants.CLUSTER_RESOURCES_DIR, constants.CLUSTER_RESOURCES_EVENTS, namespace)
@@ -191,6 +198,21 @@ func decorateMessage(message string, event *corev1.Event) string {
 	if event == nil {
 		return message
 	}
-	out := fmt.Sprintf("%s. Name: %s Message: %s", message, event.InvolvedObject.Name, event.Message)
-	return out
+	out := fmt.Sprintf("Event matched. Reason: %s Name: %s Message: %s", event.Reason, event.InvolvedObject.Name, event.Message)
+
+	tmpl := template.New("event")
+	msgTmpl, err := tmpl.Parse(message)
+	if err != nil {
+		klog.V(2).Infof("failed to parse message template: %v", err)
+		return out
+	}
+
+	var m bytes.Buffer
+	err = msgTmpl.Execute(&m, event)
+	if err != nil {
+		klog.V(2).Infof("failed to render message template: %v", err)
+		return out
+	}
+
+	return strings.TrimSpace(m.String())
 }
diff --git a/pkg/analyze/event_test.go b/pkg/analyze/event_test.go
index 3cdd5e66f..fcb60f090 100644
--- a/pkg/analyze/event_test.go
+++ b/pkg/analyze/event_test.go
@@ -15,7 +15,55 @@ func TestAnalyzeEvent(t *testing.T) {
 		analyzer     troubleshootv1beta2.EventAnalyze
 		expectResult []AnalyzeResult
 		files        map[string][]byte
+		err          error
 	}{
+		{
+			name: "reason is required",
+			analyzer: troubleshootv1beta2.EventAnalyze{
+				CollectorName: "event-collector-0",
+				Kind:          "Pod",
+				Namespace:     "default",
+				Outcomes: []*troubleshootv1beta2.Outcome{
+					{
+						Fail: &troubleshootv1beta2.SingleOutcome{
+							When:    "true",
+							Message: "test",
+						},
+					},
+				},
+			},
+			err: errors.New("reason is required"),
+			files: map[string][]byte{
+				"cluster-resources/events/default.json": []byte(`
+					{
+						"kind": "EventList",
+						"apiVersion": "v1",
+						"metadata": {
+						  "resourceVersion": "722"
+						},
+						"items": [
+						  {
+							"kind": "Event",
+							"apiVersion": "v1",
+							"metadata": {
+							  "name": "nginx-rc",
+							  "namespace": "default",
+							  "creationTimestamp": "2022-01-01T00:00:00Z"
+							},
+							"involvedObject": {
+							  "kind": "Pod",
+							  "name": "nginx-rc-12345",
+							  "namespace": "default"
+							},
+							"reason": "OOMKilled",
+							"message": "The container was killed due to an out-of-memory condition.",
+							"type": "Warning"
+						  }
+						]
+					}
+					`),
+			},
+		},
 		{
 			name: "fail when OOMKilled event is present",
 			analyzer: troubleshootv1beta2.EventAnalyze{
@@ -27,7 +75,7 @@ func TestAnalyzeEvent(t *testing.T) {
 					{
 						Fail: &troubleshootv1beta2.SingleOutcome{
 							When:    "true",
-							Message: "OOMKilled event detected",
+							Message: "Detect OOMKilled event with {{ .InvolvedObject.Kind }}-{{ .InvolvedObject.Name }} with message {{ .Message }}",
 						},
 						Pass: &troubleshootv1beta2.SingleOutcome{
 							When:    "false",
@@ -44,7 +92,7 @@ func TestAnalyzeEvent(t *testing.T) {
 					IsFail:  true,
 					IsWarn:  false,
 					IsPass:  false,
-					Message: "OOMKilled event detected. Name: nginx-rc-12345 Message: The container was killed due to an out-of-memory condition.",
+					Message: "Detect OOMKilled event with Pod-nginx-rc-12345 with message The container was killed due to an out-of-memory condition.",
 				},
 			},
 			files: map[string][]byte{
@@ -174,8 +222,12 @@ func TestAnalyzeEvent(t *testing.T) {
 				analyzer: &test.analyzer,
 			}
 			actual, err := a.Analyze(getFile, findFiles)
-			req.NoError(err)
+			if test.err != nil {
+				req.EqualError(err, test.err.Error())
+				return
+			}
 
+			req.NoError(err)
 			unPointered := []AnalyzeResult{}
 			for _, v := range actual {
 				unPointered = append(unPointered, *v)
diff --git a/pkg/apis/troubleshoot/v1beta2/analyzer_shared.go b/pkg/apis/troubleshoot/v1beta2/analyzer_shared.go
index 05a28a8fa..0ecfd7a2e 100644
--- a/pkg/apis/troubleshoot/v1beta2/analyzer_shared.go
+++ b/pkg/apis/troubleshoot/v1beta2/analyzer_shared.go
@@ -237,7 +237,7 @@ type EventAnalyze struct {
 	CollectorName string     `json:"collectorName" yaml:"collectorName"`
 	Namespace     string     `json:"namespace,omitempty" yaml:"namespace,omitempty"`
 	Kind          string     `json:"kind,omitempty" yaml:"kind,omitempty"`
-	Reason        string     `json:"reason,omitempty" yaml:"reason,omitempty"`
+	Reason        string     `json:"reason" yaml:"reason"`
 	RegexPattern  string     `json:"regex,omitempty" yaml:"regex,omitempty"`
 	Outcomes      []*Outcome `json:"outcomes" yaml:"outcomes"`
 }
diff --git a/schemas/analyzer-troubleshoot-v1beta2.json b/schemas/analyzer-troubleshoot-v1beta2.json
index bd7159eb3..07cdce604 100644
--- a/schemas/analyzer-troubleshoot-v1beta2.json
+++ b/schemas/analyzer-troubleshoot-v1beta2.json
@@ -828,7 +828,8 @@
                 "type": "object",
                 "required": [
                   "collectorName",
-                  "outcomes"
+                  "outcomes",
+                  "reason"
                 ],
                 "properties": {
                   "annotations": {
diff --git a/schemas/preflight-troubleshoot-v1beta2.json b/schemas/preflight-troubleshoot-v1beta2.json
index b5651cf01..aac4e0b5b 100644
--- a/schemas/preflight-troubleshoot-v1beta2.json
+++ b/schemas/preflight-troubleshoot-v1beta2.json
@@ -828,7 +828,8 @@
                 "type": "object",
                 "required": [
                   "collectorName",
-                  "outcomes"
+                  "outcomes",
+                  "reason"
                 ],
                 "properties": {
                   "annotations": {
diff --git a/schemas/supportbundle-troubleshoot-v1beta2.json b/schemas/supportbundle-troubleshoot-v1beta2.json
index ffb6fd0d9..b7677aa60 100644
--- a/schemas/supportbundle-troubleshoot-v1beta2.json
+++ b/schemas/supportbundle-troubleshoot-v1beta2.json
@@ -874,7 +874,8 @@
                 "type": "object",
                 "required": [
                   "collectorName",
-                  "outcomes"
+                  "outcomes",
+                  "reason"
                 ],
                 "properties": {
                   "annotations": {