diff --git a/backend/go-service/app/admin/dao/meeting_manage_dao.go b/backend/go-service/app/admin/dao/meeting_manage_dao.go
index 0e0b0f3..6ed3dd7 100644
--- a/backend/go-service/app/admin/dao/meeting_manage_dao.go
+++ b/backend/go-service/app/admin/dao/meeting_manage_dao.go
@@ -212,7 +212,7 @@ func (d *MeetingManageDAO) ListParticipantsDetail(ctx context.Context, roomID in
 		SELECT
 			mp.user_id, mp.role, mp.joined_at, mp.left_at, mp.left_reason, mp.duration,
 			COALESCE(u.nickname, '') AS nickname,
-			COALESCE(u.avatar_url, '') AS avatar
+			COALESCE(u.avatar, '') AS avatar
 		FROM meeting_participants mp
 		LEFT JOIN auth_users u ON u.id = mp.user_id
 		WHERE mp.room_id = ?