diff --git a/curl/define.go b/curl/define.go
index cc90e8a..30b9ba7 100644
--- a/curl/define.go
+++ b/curl/define.go
@@ -11,4 +11,11 @@
 // Date: 2022/05/01 19:56:48
 package curl
 
-const ()
+const (
+	// ContentTypeFormData form-data 请求
+	ContentTypeFormData = "form-data"
+	// ContentTypeFormURLEncoded x-www-form-urlencoded 请求
+	ContentTypeFormURLEncoded = "application/x-www-form-urlencoded"
+	// ContentTypeJSON json的请求方式
+	ContentTypeJSON = "application/json"
+)