diff --git a/pkg/tplx/fns.go b/pkg/tplx/fns.go
index 7e1903db..dacdfea2 100644
--- a/pkg/tplx/fns.go
+++ b/pkg/tplx/fns.go
@@ -1,6 +1,7 @@
 package tplx
 
 import (
+	"encoding/json"
 	"errors"
 	"fmt"
 	"html/template"
@@ -653,3 +654,11 @@ func BatchContactsAtsInFeishuEmail(arr interface{}) template.HTML {
 func BatchContactsAtsInFeishuId(arr interface{}) template.HTML {
 	return template.HTML(MappingAndJoin(arr, "<at id=\"", "\"></at>", " "))
 }
+
+func JsonMarshal(v interface{}) template.HTML {
+	json, err := json.Marshal(v)
+	if err != nil {
+		return template.HTML("")
+	}
+	return template.HTML(string(json))
+}
diff --git a/pkg/tplx/tplx.go b/pkg/tplx/tplx.go
index 3a1f51ea..e56b4762 100644
--- a/pkg/tplx/tplx.go
+++ b/pkg/tplx/tplx.go
@@ -61,6 +61,7 @@ var TemplateFuncMap = template.FuncMap{
 	"mappingAndJoin":                MappingAndJoin,
 	"batchContactsAtsInFeishuEmail": BatchContactsAtsInFeishuEmail,
 	"batchContactsAtsInFeishuId":    BatchContactsAtsInFeishuId,
+	"jsonMarshal":                   JsonMarshal,
 }
 
 // NewTemplateFuncMap copy on write for TemplateFuncMap