diff --git a/internal/controller/v1/comment.go b/internal/controller/v1/comment.go
index fbfe06a..e4cf356 100644
--- a/internal/controller/v1/comment.go
+++ b/internal/controller/v1/comment.go
@@ -32,6 +32,7 @@ func (cc *CommentController) CreateComment(ctx context.Context, c *app.RequestCo
 		return
 	}
 	req.RemoteAddr = c.RemoteAddr().String()
+	req.UserAgent = string(c.UserAgent())
 	commentID, err := cc.service.CreateComment(ctx, &req)
 	if err != nil {
 		serviceErr := errs.AsServiceError(err)
diff --git a/internal/dto/comment.go b/internal/dto/comment.go
index 7a26f67..628b9a5 100644
--- a/internal/dto/comment.go
+++ b/internal/dto/comment.go
@@ -23,6 +23,7 @@ type CreateCommentReq struct {
 	ReplyID    uint   `json:"reply_id"`                       // 回复的评论ID
 	IsPrivate  bool   `json:"is_private"`                     // 是否私密评论，默认false
 	RemoteAddr string `json:"remote_addr"`                    // 远程地址
+	UserAgent  string `json:"user_agent"`                     // 用户代理
 }
 
 type UpdateCommentReq struct {
diff --git a/internal/model/comment.go b/internal/model/comment.go
index 902d953..30649c1 100644
--- a/internal/model/comment.go
+++ b/internal/model/comment.go
@@ -15,6 +15,7 @@ type Comment struct {
 	Depth        int    `gorm:"default:0"`                       // 评论的层级深度,从0开始计数
 	IsPrivate    bool   `gorm:"default:false"`                   // 是否为私密评论，私密评论只有评论者和被评论对象所有者可见
 	RemoteAddr   string `gorm:"type:text"`                       // 远程地址
+	UserAgent    string `gorm:"type:text"`
 	LikeCount    uint64
 	CommentCount uint64
 }
diff --git a/internal/service/comment.go b/internal/service/comment.go
index a839aea..d99e255 100644
--- a/internal/service/comment.go
+++ b/internal/service/comment.go
@@ -40,6 +40,7 @@ func (cs *CommentService) CreateComment(ctx context.Context, req *dto.CreateComm
     UserID:     currentUser.ID,
     IsPrivate:  req.IsPrivate,
     RemoteAddr: req.RemoteAddr,
+    UserAgent:  req.UserAgent,
   }
 
   commentID, err := repo.Comment.CreateComment(comment)