diff --git a/biz/document.go b/biz/document.go
index c521ade..6da8abe 100644
--- a/biz/document.go
+++ b/biz/document.go
@@ -3,6 +3,7 @@ package biz
 import (
 	"context"
 	"fmt"
+	"html"
 	"net/url"
 	"os"
 	"path/filepath"
@@ -701,6 +702,12 @@ func (s *DocumentAPIService) DownloadDocument(ctx context.Context, req *pb.Docum
 		return res, status.Errorf(codes.Internal, "创建下载失败：%s", err.Error())
 	}
 
+	s.dbModel.CreateDynamic(&model.Dynamic{
+		UserId:  userId,
+		Type:    model.DynamicTypeDownload,
+		Content: fmt.Sprintf(`下载了文档《<a href="/document/%d">%s</a>》`, doc.Id, html.EscapeString(doc.Title)),
+	})
+
 	link, err := s.generateDownloadURL(doc, cfg, attachment.Hash)
 	if err != nil {
 		return res, status.Errorf(codes.Internal, "生成下载地址失败：%s", err.Error())
diff --git a/model/comment.go b/model/comment.go
index dee927a..79fd7d1 100644
--- a/model/comment.go
+++ b/model/comment.go
@@ -4,6 +4,8 @@ import (
 	// "fmt"
 	// "strings"
 	"errors"
+	"fmt"
+	"html"
 	"strings"
 	"time"
 
@@ -36,6 +38,9 @@ func (Comment) TableName() string {
 
 // CreateComment 创建Comment
 func (m *DBModel) CreateComment(comment *Comment) (err error) {
+	doc := &Document{}
+	m.db.Where("id = ?", comment.DocumentId).Select("id", "title").Find(doc)
+
 	tx := m.db.Begin()
 	defer func() {
 		if err != nil {
@@ -65,6 +70,10 @@ func (m *DBModel) CreateComment(comment *Comment) (err error) {
 		return
 	}
 
+	dynamic := &Dynamic{
+		UserId: comment.UserId,
+		Type:   DynamicTypeComment,
+	}
 	// 更新上级评论的评论数
 	if comment.ParentId > 0 {
 		err = tx.Model(&Comment{}).Where("id = ?", comment.ParentId).Update("comment_count", gorm.Expr("comment_count + ?", 1)).Error
@@ -72,6 +81,15 @@ func (m *DBModel) CreateComment(comment *Comment) (err error) {
 			m.logger.Error("CreateComment", zap.Error(err))
 			return
 		}
+		dynamic.Content = fmt.Sprintf(`在文档《<a href="/document/%d">%s</a>》中回复了评论`, doc.Id, html.EscapeString(doc.Title))
+	} else {
+		dynamic.Content = fmt.Sprintf(`评论了文档《<a href="/document/%d">%s</a>》`, doc.Id, html.EscapeString(doc.Title))
+	}
+
+	// 增加评论动态
+	err = tx.Create(dynamic).Error
+	if err != nil {
+		m.logger.Error("CreateComment", zap.Error(err))
 	}
 
 	return