diff --git a/model/notification.go b/model/notification.go
index 11e094f..7301f2a 100644
--- a/model/notification.go
+++ b/model/notification.go
@@ -75,14 +75,15 @@ func (n *Notification) reqBody(message string) (string, error) {
 	return "", errors.New("不支持的请求类型")
 }
 
-func (n *Notification) reqContentType() string {
+func (n *Notification) setContentType(req *http.Request) {
 	if n.RequestMethod == NotificationRequestMethodGET {
-		return ""
+		return
 	}
 	if n.RequestType == NotificationRequestTypeForm {
-		return "application/x-www-form-urlencoded"
+		req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	} else {
+		req.Header.Set("Content-Type", "application/json")
 	}
-	return "application/json"
 }
 
 func (n *Notification) setRequestHeader(req *http.Request) error {
@@ -122,6 +123,8 @@ func (n *Notification) Send(message string) error {
 		return err
 	}
 
+	n.setContentType(req)
+
 	if err := n.setRequestHeader(req); err != nil {
 		return err
 	}
diff --git a/model/notification_test.go b/model/notification_test.go
index 9d0e3a9..c16fcef 100644
--- a/model/notification_test.go
+++ b/model/notification_test.go
@@ -7,9 +7,7 @@ import (
 )
 
 var (
-	msg         = "msg"
-	reqTypeForm = "application/x-www-form-urlencoded"
-	reqTypeJSON = "application/json"
+	msg = "msg"
 )
 
 type testSt struct {
@@ -19,7 +17,6 @@ type testSt struct {
 	reqMethod  int
 	expectURL  string
 	expectBody string
-	expectType string
 }
 
 func execCase(t *testing.T, item testSt) {
@@ -33,7 +30,6 @@ func execCase(t *testing.T, item testSt) {
 	reqBody, err := n.reqBody(msg)
 	assert.Nil(t, err)
 	assert.Equal(t, item.expectBody, reqBody)
-	assert.Equal(t, item.expectType, n.reqContentType())
 }
 
 func TestNotification(t *testing.T) {
@@ -44,7 +40,6 @@ func TestNotification(t *testing.T) {
 			reqMethod:  NotificationRequestMethodGET,
 			expectURL:  "https://example.com",
 			expectBody: "",
-			expectType: "",
 		},
 		{
 			url:        "https://example.com/?m=#NEZHA#",
@@ -52,7 +47,6 @@ func TestNotification(t *testing.T) {
 			reqMethod:  NotificationRequestMethodGET,
 			expectURL:  "https://example.com/?m=" + msg,
 			expectBody: "",
-			expectType: "",
 		},
 		{
 			url:        "https://example.com/?m=#NEZHA#",
@@ -61,7 +55,6 @@ func TestNotification(t *testing.T) {
 			reqType:    NotificationRequestTypeForm,
 			expectURL:  "https://example.com/?m=" + msg,
 			expectBody: "asd=" + msg,
-			expectType: reqTypeForm,
 		},
 		{
 			url:        "https://example.com/?m=#NEZHA#",
@@ -70,7 +63,6 @@ func TestNotification(t *testing.T) {
 			reqType:    NotificationRequestTypeForm,
 			expectURL:  "https://example.com/?m=" + msg,
 			expectBody: "%23NEZHA%23=" + msg,
-			expectType: reqTypeForm,
 		},
 		{
 			url:        "https://example.com/?m=#NEZHA#",
@@ -79,7 +71,6 @@ func TestNotification(t *testing.T) {
 			reqType:    NotificationRequestTypeJSON,
 			expectURL:  "https://example.com/?m=" + msg,
 			expectBody: `{"asd":"msg"}`,
-			expectType: reqTypeJSON,
 		},
 		{
 			url:        "https://example.com/?m=#NEZHA#",
@@ -88,7 +79,6 @@ func TestNotification(t *testing.T) {
 			reqType:    NotificationRequestTypeJSON,
 			expectURL:  "https://example.com/?m=" + msg,
 			expectBody: `{"msg":"msg"}`,
-			expectType: reqTypeJSON,
 		},
 	}