diff --git a/workflow.go b/workflow.go
index 74ac2e4..d11c47a 100644
--- a/workflow.go
+++ b/workflow.go
@@ -110,6 +110,7 @@ func (wf *Workflow) SetURLQuery(query url.Values) *Workflow {
 	if query == nil {
 		return wf
 	}
+	query = (url.Values)(mergeMapList(wf.session.Query, query))
 	wf.ParsedURL.RawQuery = query.Encode()
 	return wf
 }
@@ -153,44 +154,46 @@ func (wf *Workflow) SetURLRawPath(path string) *Workflow {
 	return wf
 }
 
-// SetBodyParams 参数设晚上
+// SetBodyParams 参数设置
 func (wf *Workflow) SetBodyParams(params ...interface{}) *Workflow {
-	if params == nil {
-		return wf
-	}
+	if params != nil {
 
-	plen := len(params)
-	defaultContentType := TypeURLENCODED
+		plen := len(params)
+		defaultContentType := TypeURLENCODED
 
-	if plen >= 2 {
-		t := params[plen-1]
-		defaultContentType = t.(string)
-		wf.Body.ContentType = defaultContentType
-	} else {
-		wf.Body.ContentType = defaultContentType
-	}
+		if plen >= 2 {
+			t := params[plen-1]
+			defaultContentType = t.(string)
+			wf.Body.ContentType = defaultContentType
+		} else {
+			wf.Body.ContentType = defaultContentType
+		}
 
-	if defaultContentType == TypeFormData {
-		// TODO: form-data
-		createMultipart(wf.Body, params)
-	} else {
-		var values url.Values
-		switch param := params[0].(type) {
-		case map[string]string:
-			values := make(url.Values)
-			for k, v := range param {
-				values.Set(k, v)
+		if defaultContentType == TypeFormData {
+			// TODO: form-data
+			createMultipart(wf.Body, params)
+		} else {
+
+			var values url.Values
+			switch param := params[0].(type) {
+			case map[string]string:
+				values := make(url.Values)
+				for k, v := range param {
+					values.Set(k, v)
+				}
+				wf.Body.IOBody = []byte(values.Encode())
+			case map[string][]string:
+				values = param
+				wf.Body.IOBody = []byte(values.Encode())
+			case string:
+				wf.Body.IOBody = []byte(param)
+			case []byte:
+				wf.Body.IOBody = param
 			}
-			wf.Body.IOBody = []byte(values.Encode())
-		case map[string][]string:
-			values = param
-			wf.Body.IOBody = []byte(values.Encode())
-		case string:
-			wf.Body.IOBody = []byte(param)
-		case []byte:
-			wf.Body.IOBody = param
+
 		}
 	}
+
 	return wf
 }
 
@@ -226,7 +229,7 @@ func mergeMapList(header1, header2 map[string][]string) map[string][]string {
 			if mergeValue, ok := merged[key]; ok {
 				merged[key] = append(mergeValue, v)
 			} else {
-				merged[key] = append(mergeValue, v)
+				merged[key] = []string{v}
 			}
 		}
 	}
@@ -236,7 +239,7 @@ func mergeMapList(header1, header2 map[string][]string) map[string][]string {
 
 // setHeaderRequest 设置request的头
 func setHeaderRequest(req *http.Request, wf *Workflow) {
-	req.Header = mergeMapList(wf.session.Header, wf.Header)
+	req.Header = mergeMapList(req.Header, mergeMapList(wf.session.Header, wf.Header))
 }
 
 // setHeaderRequest 设置request的临时Cookie, 永久需要在session上设置cookie