diff --git a/session.go b/session.go
index aa4da6e..7b30409 100644
--- a/session.go
+++ b/session.go
@@ -34,9 +34,10 @@ type Session struct {
 	client    *http.Client
 	transport *http.Transport
 	cookiejar http.CookieJar
-	params    *Body
-	Header    http.Header
+	body      *Body
 	auth      *BasicAuth
+
+	Header http.Header
 }
 
 const (
@@ -95,7 +96,7 @@ func NewSession() *Session {
 	}
 
 	client.Jar = cjar
-	return &Session{client: client, params: &Body{}, transport: transport, auth: nil, cookiejar: client.Jar, Header: make(http.Header)}
+	return &Session{client: client, body: &Body{}, transport: transport, auth: nil, cookiejar: client.Jar, Header: make(http.Header)}
 }
 
 // SetConfig 设置配置