diff --git a/app/models/mailer.rb b/app/models/mailer.rb
index 4981d12f1..507ead3b1 100644
--- a/app/models/mailer.rb
+++ b/app/models/mailer.rb
@@ -110,7 +110,7 @@ class Mailer < ActionMailer::Base
     # issue回复
     @issues_journals = Journal.find_by_sql("select j.* from journals j, members m, projects p, issues i
      where m.user_id = '#{user.id}' and p.id = m.project_id and i.project_id = p.id and j.journalized_id = i.id
-     and j.journalized_type='Issue' and (j.created_on between '#{date_from}' and '#{date_to}') order by created_on desc")
+     and j.journalized_type='Issue' and (j.created_on between '#{date_from}' and '#{date_to}') order by i.project_id, created_on desc")
 
     # @bids 查询课程作业，包括老师发布的作业，以及user提交作业
     # @attachments查询课程课件更新
@@ -130,7 +130,7 @@ class Mailer < ActionMailer::Base
 
     # 项目附件
     @project_attachments = Attachment.find_by_sql("select DISTINCT a.* from members m, attachments a
-     where a.container_id = m.project_id and m.user_id='#{user.id}' and container_type = 'Project' and (a.created_on between '#{date_from}' and '#{date_to}') order by a.created_on desc")
+     where a.container_id = m.project_id and m.user_id='#{user.id}' and container_type = 'Project' and (a.created_on between '#{date_from}' and '#{date_to}') order by m.project_id, a.created_on desc")
 
     # user 提交的作业
     # @homeworks = HomeworkAttach.where("user_id=#{user.id} and (created_at between '#{date_from}' and '#{date_to}')").order("created_at desc")
@@ -138,7 +138,7 @@ class Mailer < ActionMailer::Base
     # 查询user所在项目添加wiki
     @wiki_contents = WikiContent.find_by_sql("select DISTINCT wc.* from wikis w, members m, projects p, wiki_pages wp, wiki_contents wc where
      m.user_id = '#{user.id}' and m.project_id = p.id and w.project_id = p.id and w.id = wp.wiki_id and wc.page_id = wp.id and w.project_id>0
-     and (wc.updated_on between '#{date_from}' and '#{date_to}') order by updated_on desc")
+     and (wc.updated_on between '#{date_from}' and '#{date_to}') order by m.project_id, updated_on desc")
 
     # 查询user在课程中发布的讨论帖子
     course_mesages = Message.find_by_sql("select DISTINCT me.* from messages me, boards b, members m where
@@ -149,7 +149,7 @@ class Mailer < ActionMailer::Base
     # 查询user在项目中发布的讨论帖子
     project_messages = Message.find_by_sql("select DISTINCT me.* from messages me, boards b, members m where
      b.id = me.board_id and b.project_id = m.project_id
-     and b.project_id != '-1' and m.user_id = '#{user.id}' and (me.created_on between '#{date_from}' and '#{date_to}') order by created_on desc")
+     and b.project_id != '-1' and m.user_id = '#{user.id}' and (me.created_on between '#{date_from}' and '#{date_to}') order by m.project_id, created_on desc")
     # messages = Message.find_by_sql("select DISTINCT * from messages where author_id = #{user.id} and (created_on between '#{date_from}' and '#{date_to}') order by created_on desc")
     @course_messages ||= []
     @project_messages ||= []
@@ -176,7 +176,7 @@ class Mailer < ActionMailer::Base
 
     # 查询user在项目中添加新闻和回复新闻
     @project_news = (project_ids && !project_ids.empty?) ? News.find_by_sql("select DISTINCT n.* from news n where  n.project_id in (#{project_ids})
-                                                     and (created_on between '#{date_from}' and '#{date_to}') order by created_on desc") : []
+                                                     and (created_on between '#{date_from}' and '#{date_to}') order by n.project_id, created_on desc") : []
 
     @project_news_comments =  Comment.find_by_sql("select c.* from comments c, members m, projects p, news n
      where m.user_id = '#{user.id}' and p.id = m.project_id and n.project_id = p.id and c.commented_id = n.id