diff --git a/docs/netutil.md b/docs/netutil.md
index 8e2dbd9..d818765 100644
--- a/docs/netutil.md
+++ b/docs/netutil.md
@@ -586,9 +586,9 @@ func main() {
 }
 ```
 
-### <span id="HttpGet">HttpGet (Deprecated: use SendRequest for replacement)</span>
+### <span id="HttpGet">HttpGet</span>
 
-<p>Send http get request.</p>
+<p>Send http get request. (Deprecated: use SendRequest for replacement)</p>
 
 <b>Signature:</b>
 
@@ -628,9 +628,9 @@ func main() {
 }
 ```
 
-### <span id="HttpPost">HttpPost (Deprecated: use SendRequest for replacement)</span>
+### <span id="HttpPost">HttpPost</span>
 
-<p>Send http post request.</p>
+<p>Send http post request. (Deprecated: use SendRequest for replacement)</p>
 
 <b>Signature:</b>
 
@@ -658,28 +658,30 @@ import (
 func main() {
     url := "https://jsonplaceholder.typicode.com/todos"
     header := map[string]string{
-        "Content-Type": "application/json",
-    }
-    type Todo struct {
-        UserId int    `json:"userId"`
-        Title  string `json:"title"`
-    }
-    todo := Todo{1, "TestAddToDo"}
-    bodyParams, _ := json.Marshal(todo)
+		"Content-Type": "application/x-www-form-urlencoded",
+		// "Content-Type": "multipart/form-data",
+	}
 
-    resp, err := netutil.HttpPost(url, header, nil, bodyParams)
-    if err != nil {
-        log.Fatal(err)
-    }
+	postData := url.Values{}
+	postData.Add("userId", "1")
+	postData.Add("title", "TestToDo")
 
-    body, _ := ioutil.ReadAll(resp.Body)
-    fmt.Println(body)
+	// postData := make(map[string]string)
+	// postData["userId"] = "1"
+	// postData["title"] = "title"
+
+	resp, err := netutil.HttpPost(apiUrl, header, nil, postData)
+	if err != nil {
+		log.Fatal(err)
+	}
+	body, _ := io.ReadAll(resp.Body)
+	t.Log("response: ", resp.StatusCode, string(body))
 }
 ```
 
-### <span id="HttpPut">HttpPut (Deprecated: use SendRequest for replacement)</span>
+### <span id="HttpPut">HttpPut</span>
 
-<p>Send http put request.</p>
+<p>Send http put request. (Deprecated: use SendRequest for replacement)</p>
 
 <b>Signature:</b>
 
@@ -727,9 +729,9 @@ func main() {
 }
 ```
 
-### <span id="HttpDelete">HttpDelete (Deprecated: use SendRequest for replacement)</span>
+### <span id="HttpDelete">HttpDelete</span>
 
-<p>Send http delete request.</p>
+<p>Send http delete request. (Deprecated: use SendRequest for replacement)</p>
 
 <b>Signature:</b>
 
@@ -766,9 +768,9 @@ func main() {
 }
 ```
 
-### <span id="HttpPatch">HttpPatch (Deprecated: use SendRequest for replacement)</span>
+### <span id="HttpPatch">HttpPatch</span>
 
-<p>Send http patch request.</p>
+<p>Send http patch request. (Deprecated: use SendRequest for replacement)</p>
 
 <b>Signature:</b>
 
diff --git a/docs/netutil_zh-CN.md b/docs/netutil_zh-CN.md
index 38b87ff..9d2e996 100644
--- a/docs/netutil_zh-CN.md
+++ b/docs/netutil_zh-CN.md
@@ -585,9 +585,9 @@ func main() {
 }
 ```
 
-### <span id="HttpGet">HttpGet (Deprecated: use SendRequest for replacement)</span>
+### <span id="HttpGet">HttpGet</span>
 
-<p>发送http get请求</p>
+<p>发送http get请求。(已废弃: 使用SendRequest)</p>
 
 <b>函数签名:</b>
 
@@ -627,9 +627,9 @@ func main() {
 }
 ```
 
-### <span id="HttpPost">HttpPost (Deprecated: use SendRequest for replacement)</span>
+### <span id="HttpPost">HttpPost</span>
 
-<p>发送http post请求</p>
+<p>发送http post请求。(已废弃: 使用SendRequest)</p>
 
 <b>函数签名:</b>
 
@@ -657,28 +657,30 @@ import (
 func main() {
     url := "https://jsonplaceholder.typicode.com/todos"
     header := map[string]string{
-        "Content-Type": "application/json",
-    }
-    type Todo struct {
-        UserId int    `json:"userId"`
-        Title  string `json:"title"`
-    }
-    todo := Todo{1, "TestAddToDo"}
-    bodyParams, _ := json.Marshal(todo)
+		"Content-Type": "application/x-www-form-urlencoded",
+		// "Content-Type": "multipart/form-data",
+	}
 
-    resp, err := netutil.HttpPost(url, header, nil, bodyParams)
-    if err != nil {
-        log.Fatal(err)
-    }
+	postData := url.Values{}
+	postData.Add("userId", "1")
+	postData.Add("title", "TestToDo")
 
-    body, _ := ioutil.ReadAll(resp.Body)
+	// postData := make(map[string]string)
+	// postData["userId"] = "1"
+	// postData["title"] = "title"
+
+	resp, err := netutil.HttpPost(apiUrl, header, nil, postData)
+	if err != nil {
+		log.Fatal(err)
+	}
+	body, _ := io.ReadAll(resp.Body)
     fmt.Println(body)
 }
 ```
 
-### <span id="HttpPut">HttpPut (Deprecated: use SendRequest for replacement)</span>
+### <span id="HttpPut">HttpPut</span>
 
-<p>发送http put请求</p>
+<p>发送http put请求。(已废弃: 使用SendRequest)</p>
 
 <b>函数签名:</b>
 
@@ -726,9 +728,9 @@ func main() {
 }
 ```
 
-### <span id="HttpDelete">HttpDelete (Deprecated: use SendRequest for replacement)</span>
+### <span id="HttpDelete">HttpDelete</span>
 
-<p>发送http delete请求</p>
+<p>发送http delete请求。(已废弃: 使用SendRequest)</p>
 
 <b>函数签名:</b>
 
@@ -765,9 +767,9 @@ func main() {
 }
 ```
 
-### <span id="HttpPatch">HttpPatch (Deprecated: use SendRequest for replacement)</span>
+### <span id="HttpPatch">HttpPatch</span>
 
-<p>发送http patch请求</p>
+<p>发送http patch请求。(已废弃: 使用SendRequest)</p>
 
 <b>函数签名:</b>
 
diff --git a/netutil/http_test.go b/netutil/http_test.go
index ebcfa24..2b8fc87 100644
--- a/netutil/http_test.go
+++ b/netutil/http_test.go
@@ -2,6 +2,7 @@ package netutil
 
 import (
 	"encoding/json"
+	"io"
 	"io/ioutil"
 	"log"
 	"net/http"
@@ -51,23 +52,23 @@ func TestHttpPost(t *testing.T) {
 func TestHttpPostFormData(t *testing.T) {
 	apiUrl := "https://jsonplaceholder.typicode.com/todos"
 	header := map[string]string{
-		// "Content-Type": "application/x-www-form-urlencoded",
-		"Content-Type": "multipart/form-data",
-	}
-	type Todo struct {
-		UserId int    `json:"userId"`
-		Title  string `json:"title"`
+		"Content-Type": "application/x-www-form-urlencoded",
+		// "Content-Type": "multipart/form-data",
 	}
+
 	postData := url.Values{}
 	postData.Add("userId", "1")
-	postData.Add("title", "TestAddToDo")
+	postData.Add("title", "TestToDo")
 
-	resp, err := HttpPost(apiUrl, header, postData, nil)
+	// postData := make(map[string]string)
+	// postData["userId"] = "1"
+	// postData["title"] = "title"
+
+	resp, err := HttpPost(apiUrl, header, nil, postData)
 	if err != nil {
 		log.Fatal(err)
-		t.FailNow()
 	}
-	body, _ := ioutil.ReadAll(resp.Body)
+	body, _ := io.ReadAll(resp.Body)
 	t.Log("response: ", resp.StatusCode, string(body))
 }
 
diff --git a/netutil/net_internal.go b/netutil/net_internal.go
index 4aeb869..3eea3cf 100644
--- a/netutil/net_internal.go
+++ b/netutil/net_internal.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
+	"io"
 	"io/ioutil"
 	"net/http"
 	"net/url"
@@ -74,51 +75,34 @@ func setHeaderAndQueryParam(req *http.Request, reqUrl string, header, queryParam
 }
 
 func setHeaderAndQueryAndBody(req *http.Request, reqUrl string, header, queryParam, body interface{}) error {
-	err := setHeader(req, header)
-	if err != nil {
+	if err := setHeader(req, header); err != nil {
 		return err
-	}
-	err = setQueryParam(req, reqUrl, queryParam)
-	if err != nil {
+	} else if err = setQueryParam(req, reqUrl, queryParam); err != nil {
 		return err
-	}
-	if strings.Contains(req.Header.Get("Content-Type"), "multipart/form-data") || req.Header.Get("Content-Type") == "application/x-www-form-urlencoded" {
-		if formData, ok := queryParam.(url.Values); ok {
-			err = setBodyByte(req, []byte(formData.Encode()))
-		}
-		if formData, ok := queryParam.(map[string]string); ok {
-			postData := url.Values{}
-			for k, v := range formData {
-				postData.Set(k, v)
-			}
-			err = setBodyByte(req, []byte(postData.Encode()))
-		}
-
-	} else {
-		err = setBodyByte(req, body)
-	}
-	if err != nil {
+	} else if err = setBodyByte(req, body); err != nil {
 		return err
 	}
 	return nil
 }
 
 func setHeader(req *http.Request, header interface{}) error {
-	if header != nil {
-		switch v := header.(type) {
-		case map[string]string:
-			for k := range v {
-				req.Header.Add(k, v[k])
-			}
-		case http.Header:
-			for k, vv := range v {
-				for _, vvv := range vv {
-					req.Header.Add(k, vvv)
-				}
-			}
-		default:
-			return errors.New("header params type should be http.Header or map[string]string")
+	if header == nil {
+		return nil
+	}
+
+	switch v := header.(type) {
+	case map[string]string:
+		for k := range v {
+			req.Header.Add(k, v[k])
 		}
+	case http.Header:
+		for k, vv := range v {
+			for _, vvv := range vv {
+				req.Header.Add(k, vvv)
+			}
+		}
+	default:
+		return errors.New("header params type should be http.Header or map[string]string")
 	}
 
 	if host := req.Header.Get("Host"); host != "" {
@@ -138,19 +122,22 @@ func setUrl(req *http.Request, reqUrl string) error {
 }
 
 func setQueryParam(req *http.Request, reqUrl string, queryParam interface{}) error {
+	if queryParam == nil {
+		return nil
+	}
+
 	var values url.Values
-	if queryParam != nil {
-		switch v := queryParam.(type) {
-		case map[string]interface{}:
-			values = url.Values{}
-			for k := range v {
-				values.Set(k, fmt.Sprintf("%v", v[k]))
-			}
-		case url.Values:
-			values = v
-		default:
-			return errors.New("query params type should be url.Values or map[string]interface{}")
+
+	switch v := queryParam.(type) {
+	case map[string]interface{}:
+		values = url.Values{}
+		for k := range v {
+			values.Set(k, fmt.Sprintf("%v", v[k]))
 		}
+	case url.Values:
+		values = v
+	default:
+		return errors.New("query params type should be url.Values or map[string]interface{}")
 	}
 
 	// set url
@@ -171,14 +158,36 @@ func setQueryParam(req *http.Request, reqUrl string, queryParam interface{}) err
 }
 
 func setBodyByte(req *http.Request, body interface{}) error {
-	if body != nil {
-		switch b := body.(type) {
-		case []byte:
-			req.Body = ioutil.NopCloser(bytes.NewReader(b))
-			req.ContentLength = int64(len(b))
-		default:
-			return errors.New("body type should be []byte")
+	if body == nil {
+		return nil
+	}
+	var bodyReader *bytes.Reader
+	switch b := body.(type) {
+	case io.Reader:
+		buf := bytes.NewBuffer(nil)
+		if _, err := io.Copy(buf, b); err != nil {
+			return err
 		}
+		req.Body = ioutil.NopCloser(buf)
+		req.ContentLength = int64(buf.Len())
+	case []byte:
+		bodyReader = bytes.NewReader(b)
+		req.Body = ioutil.NopCloser(bodyReader)
+		req.ContentLength = int64(bodyReader.Len())
+	case map[string]interface{}:
+		values := url.Values{}
+		for k := range b {
+			values.Set(k, fmt.Sprintf("%v", b[k]))
+		}
+		bodyReader = bytes.NewReader([]byte(values.Encode()))
+		req.Body = ioutil.NopCloser(bodyReader)
+		req.ContentLength = int64(bodyReader.Len())
+	case url.Values:
+		bodyReader = bytes.NewReader([]byte(b.Encode()))
+		req.Body = ioutil.NopCloser(bodyReader)
+		req.ContentLength = int64(bodyReader.Len())
+	default:
+		return fmt.Errorf("invalid body type: %T", b)
 	}
 	return nil
 }