diff --git a/ragflow/document.go b/ragflow/document.go
index 2fee990..823f26e 100644
--- a/ragflow/document.go
+++ b/ragflow/document.go
@@ -5,11 +5,11 @@ package ragflow
 import (
 	"bytes"
 	"context"
+	"mime/multipart"
 	"strings"
 
 	"github.com/gogf/gf/v2/encoding/gjson"
 	"github.com/gogf/gf/v2/errors/gerror"
-	"github.com/gogf/gf/v2/frame/g"
 )
 
 // 数据集内文件管理
@@ -158,16 +158,34 @@ func (c *Client) UploadDocumentFromText(ctx context.Context, datasetId, content,
 	// 构造URL
 	url := c.BaseURL + "/api/v1/datasets/" + datasetId + "/documents"
 
-	// 使用gclient上传文本作为文件
+	// 创建multipart writer
+	body := &bytes.Buffer{}
+	writer := multipart.NewWriter(body)
+
+	// 添加文件字段
+	part, err := writer.CreateFormFile("file", filename)
+	if err != nil {
+		return "", gerror.Wrap(err, "创建form file失败")
+	}
+
+	// 写入内容
+	if _, err = part.Write([]byte(content)); err != nil {
+		return "", gerror.Wrap(err, "写入文件内容失败")
+	}
+
+	// 关闭multipart writer
+	if err = writer.Close(); err != nil {
+		return "", gerror.Wrap(err, "关闭multipart writer失败")
+	}
+
+	// 发送请求
 	client := c.HTTPClient.Clone()
 	client.SetHeader("Authorization", "Bearer "+c.APIKey)
+	client.SetHeader("Content-Type", writer.FormDataContentType())
 
-	// 使用ContentType方法上传multipart表单
-	resp, err := client.Post(ctx, url, g.Map{
-		"file": bytes.NewReader([]byte(content)),
-	})
+	resp, err := client.Post(ctx, url, body.Bytes())
 	if err != nil {
-		return "", err
+		return "", gerror.Wrap(err, "上传文档请求失败")
 	}
 	defer resp.Close()