diff --git a/workflow.go b/workflow.go
index 2029893..a5da8ad 100644
--- a/workflow.go
+++ b/workflow.go
@@ -41,9 +41,16 @@ func (wf *Workflow) AddHeader(key, value string) *Workflow {
 	return wf
 }
 
-// SetHeader 设置头信息 这样构造 []string{value} Get方法从Header参数上获取
-func (wf *Workflow) SetHeader(key, value string) *Workflow {
-	wf.Header.Set(key, value)
+// SetHeader 设置完全替换原有Header
+func (wf *Workflow) SetHeader(header http.Header) *Workflow {
+	wf.Header = make(http.Header)
+	for k, HValues := range header {
+		var newHValues []string
+		for _, value := range HValues {
+			newHValues = append(newHValues, value)
+		}
+		wf.Header[k] = newHValues
+	}
 	return wf
 }
 
@@ -69,6 +76,14 @@ func (wf *Workflow) AddCookie(c *http.Cookie) *Workflow {
 	return wf
 }
 
+// AddCookies 添加[]*http.Cookie
+func (wf *Workflow) AddCookies(cookies []*http.Cookie) *Workflow {
+	for _, c := range cookies {
+		wf.AddCookie(c)
+	}
+	return wf
+}
+
 // AddKVCookie 添加 以 key value 的 Cookie
 func (wf *Workflow) AddKVCookie(name, value string) *Workflow {
 	wf.Cookies[name] = &http.Cookie{Name: name, Value: value}