diff --git a/app/controllers/exercise_controller.rb b/app/controllers/exercise_controller.rb
index 0eeffa588..75751e4f7 100644
--- a/app/controllers/exercise_controller.rb
+++ b/app/controllers/exercise_controller.rb
@@ -60,17 +60,17 @@ class ExerciseController < ApplicationController
     else
       @can_edit_excercise = !has_commit_exercise?(@exercise.id,User.current.id)&& exercise_end
     end
-    @exercise_user = ExerciseUser.where("user_id=? and exercise_id=?", User.current.id, @exercise.id).first
-    if @exercise_user.nil?
-      eu = ExerciseUser.create(:user_id => User.current.id, :exercise_id => @exercise.id, :start_at => Time.now, :status => false)
+    unless @is_teacher
       @exercise_user = ExerciseUser.where("user_id=? and exercise_id=?", User.current.id, @exercise.id).first
+      if @exercise_user.nil?
+        eu = ExerciseUser.create(:user_id => User.current.id, :exercise_id => @exercise.id, :start_at => Time.now, :status => false)
+        @exercise_user = ExerciseUser.where("user_id=? and exercise_id=?", User.current.id, @exercise.id).first
+      end
+      score = calculate_student_score(@exercise, User.current)
+      @exercise_user.update_attributes(:score => score)
     end
     # @percent = get_percent(@exercise,User.current)
-    exercise_questions = @exercise.exercise_questions
-    @exercise_questions = paginateHelper exercise_questions,5 #分页
-    score = calculate_student_score(@exercise, User.current)
-    #eu = get_exercise_user(@exercise.id, User.current.id)
-    @exercise_user.update_attributes(:score => score)
+    @exercise_questions = @exercise.exercise_questions
     respond_to do |format|
       format.html {render :layout => 'base_courses'}
     end
diff --git a/app/views/exercise/_student_exercise.html.erb b/app/views/exercise/_student_exercise.html.erb
index 9c9916e60..9b07e0626 100644
--- a/app/views/exercise/_student_exercise.html.erb
+++ b/app/views/exercise/_student_exercise.html.erb
@@ -38,9 +38,9 @@
                 $("#show_student_result_div").on('click',show_result);
             <% else %>
                 $("#show_student_result_div").attr("title","截止日期未到，暂不能查看学生答题结果");
-                $("#student_name_id").attr("title","截止日期未到，暂不能查看学生答题结果");
-                $("#student_id_id").attr("title","截止日期未到，暂不能查看学生答题结果");
-                $("#student_class_id").attr("title","截止日期未到，暂不能查看学生答题结果");
+                $("#student_name_<%= exercise.id%>").attr("title","截止日期未到，暂不能查看学生答题结果");
+                $("#student_id_<%= exercise.id%>").attr("title","截止日期未到，暂不能查看学生答题结果");
+                $("#student_class_<%= exercise.id%>").attr("title","截止日期未到，暂不能查看学生答题结果");
             <% end %>
         });
         function show_result() {
@@ -56,13 +56,13 @@
           <div id="show_student_result_div" style="cursor: pointer;" class="student_work_<%= exercise.id%>">
             <li>
               <ul class="mt10 fl">
-                <li class="hworkStName mr15 mt16" title="姓名" id="student_name_id">
+                <li class="hworkStName mr15 mt16" title="姓名" id="student_name_<%= exercise.id%>">
                   <%=exercise.user.show_name %>
                 </li>
-                <li class="hworkStID mr10 mt16" title="学号" id="student_id_id">
+                <li class="hworkStID mr10 mt16" title="学号" id="student_id_<%= exercise.id%>">
                   <%= exercise.user.user_extensions.nil? ? "--" : exercise.user.user_extensions.student_id%>
                 </li>
-                <li class="hworkStID mt16" title="班级"  id="student_class_id">
+                <li class="hworkStID mt16" title="班级"  id="student_class_<%= exercise.id%>">
                   --
                 </li>
               </ul>