diff --git a/app/models/mailer.rb b/app/models/mailer.rb
index 204aa109a..7411dd30f 100644
--- a/app/models/mailer.rb
+++ b/app/models/mailer.rb
@@ -127,12 +127,12 @@ class Mailer < ActionMailer::Base
     # @homeworks = HomeworkAttach.where("user_id=#{user.id} and (created_at between '#{date_from}' and '#{date_to}')").order("created_at desc")
 
     # 查询user在课程中发布的讨论帖子
-    course_mesages = Message.find_by_sql("select me.* from messages me, boards b, members m where
+    course_mesages = Message.find_by_sql("select distinct me.* from messages me, boards b, members m where
      b.id = me.board_id and b.course_id = m.course_id
      and b.course_id is not Null and m.user_id = '#{user.id}'
      and (me.created_on between '#{date_from}' and '#{date_to}') order by created_on desc")
     # 查询user在项目中发布的讨论帖子
-    project_messages = Message.find_by_sql("select me.* from messages me, boards b, members m where
+    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")
     # 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")
diff --git a/app/views/mailer/send_for_user_activities.html.erb b/app/views/mailer/send_for_user_activities.html.erb
index 9723783fe..54d2db43c 100644
--- a/app/views/mailer/send_for_user_activities.html.erb
+++ b/app/views/mailer/send_for_user_activities.html.erb
@@ -108,7 +108,7 @@
           <ul class="wmail_ul" style="margin-left:10px; border-bottom:1px dashed #cfcfcf; padding-bottom:15px; width:720px; margin-bottom:15px;">
             <h4 class="wmail_h4" style="color:#474646; font-size:14px; margin-bottom:5px;" >
               <%= l(:view_borad_course) %>
-              <span class="wmail_num" style="color:#fe3f0c; margin-left:5px; font-weight:normal;">(<%= @course_journal_messages.count %>)</span>
+              <span class="wmail_num" style="color:#fe3f0c; margin-left:5px; font-weight:normal;">(<%= @course_messages.count %>)</span>
             </h4>
             <% @course_messages.each do |course_message|%>
                 <li style="clear: both; list-style: none;">
diff --git a/app/views/mailer/send_for_user_activities.text.erb b/app/views/mailer/send_for_user_activities.text.erb
index 669aca3d1..1bfbca4a1 100644
--- a/app/views/mailer/send_for_user_activities.text.erb
+++ b/app/views/mailer/send_for_user_activities.text.erb
@@ -88,7 +88,7 @@
   <% unless @course_messages.first.nil? %>
 
           <%= l(:view_borad_course) %>
-          (<%= @course_journal_messages.count %>)
+          (<%= @course_messages.count %>)
 
 
         <% @course_messages.each do |course_message|%>