diff --git a/biz/document.go b/biz/document.go
index 2f8250d..e1bd5a9 100644
--- a/biz/document.go
+++ b/biz/document.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"net/url"
+	"os"
 	"path/filepath"
 	"strings"
 	"time"
@@ -220,16 +221,36 @@ func (s *DocumentAPIService) GetDocument(ctx context.Context, req *pb.GetDocumen
 
 	// 查找文档相关联的附件。对于列表，只返回hash和id，不返回其他字段
 	attchment := s.dbModel.GetAttachmentByTypeAndTypeId(model.AttachmentTypeDocument, doc.Id, "hash", "path")
+	fixedData := make(map[string]interface{})
 	if pbDoc.Width == 0 || pbDoc.Height == 0 {
 		bigCover := strings.TrimLeft(strings.TrimSuffix(attchment.Path, filepath.Ext(attchment.Path)), "./") + "/cover.big.png"
 		doc.Width, doc.Height, _ = util.GetImageSize(bigCover)
 		if doc.Width*doc.Height > 0 {
 			pbDoc.Width = int32(doc.Width)
 			pbDoc.Height = int32(doc.Height)
-			s.dbModel.UpdateDocumentField(doc.Id, map[string]interface{}{"width": doc.Width, "height": doc.Height})
+			fixedData = map[string]interface{}{"width": doc.Width, "height": doc.Height}
 		}
 	}
 
+	if desc := strings.TrimSpace(pbDoc.Description); desc == "" {
+		desc = doc.Title // 默认
+		textFile := strings.TrimLeft(strings.TrimSuffix(attchment.Path, filepath.Ext(attchment.Path)), "./") + "/content.txt"
+		if content, errRead := os.ReadFile(textFile); errRead == nil { // 读取文本内容，以提取关键字和摘要
+			contentStr := string(content)
+			replacer := strings.NewReplacer("\r", " ", "\n", " ", "\t", " ")
+			contentStr = strings.TrimSpace(replacer.Replace(util.Substr(contentStr, 255)))
+			if contentStr != "" {
+				desc = contentStr
+			}
+		}
+		doc.Description = desc
+		fixedData["description"] = desc
+	}
+
+	if len(fixedData) > 0 {
+		s.dbModel.UpdateDocumentField(doc.Id, fixedData)
+	}
+
 	pbDoc.Attachment = &pb.Attachment{Hash: attchment.Hash}
 	return pbDoc, nil
 }