diff --git a/app/controllers/exercise_controller.rb b/app/controllers/exercise_controller.rb
index 8fa5e0230..095c57850 100644
--- a/app/controllers/exercise_controller.rb
+++ b/app/controllers/exercise_controller.rb
@@ -2,7 +2,7 @@ class ExerciseController < ApplicationController
   layout "base_courses"
 
   before_filter :find_exercise_and_course, :only => [:create_exercise_question]
-  before_filter :find_course, :only => [:index,:new,:create,:student_exercise_list,:edit]
+  before_filter :find_course, :only => [:index,:new,:student_exercise_list,:edit]
 
   def index
     @is_teacher = User.current.allowed_to?(:as_teacher,@course)
@@ -46,7 +46,7 @@ class ExerciseController < ApplicationController
         :time => Time.now,
         :end_time => Time.now,
         :publish_time => Time.now,
-        :polls_description => ""
+        :exercise_description => ""
     }
     @exercise = Exercise.create option
     if @exercise
@@ -76,7 +76,6 @@ class ExerciseController < ApplicationController
   end
 
   def edit
-    @exercise = Exercise.find params[:id]
     respond_to do |format|
       format.html{render :layout => 'base_courses'}
   end
@@ -113,7 +112,7 @@ class ExerciseController < ApplicationController
   # 添加题目
   # question_type 1：单选 2：多选 3：填空题
   def create_exercise_question
-    question_title = params[:exercise_questions_title].nil? || params[:poll_questions_title].empty? ? l(:label_enter_single_title) : params[:poll_questions_title]
+    question_title = params[:question_title].nil? || params[:question_title].empty? ? l(:label_enter_single_title) : params[:question_title]
     option = {
         :question_title => question_title,
         :question_type => params[:question_type] || 1,
diff --git a/app/views/exercise/_new_MC.html.erb b/app/views/exercise/_new_MC.html.erb
index 87cd22d81..de7e9ba31 100644
--- a/app/views/exercise/_new_MC.html.erb
+++ b/app/views/exercise/_new_MC.html.erb
@@ -9,7 +9,7 @@
   <div class="ur_editor_title">
     <label>问题：&nbsp;&nbsp;</label>
     <input name="question_type" value="1" type="hidden">
-    <input name="questions_title" class="questionTitle" placeholder="请输入单选题题目" type="text">
+    <input name="question_title" id="question_title" class="questionTitle" placeholder="请输入单选题题目" type="text">
   </div>
   <div class="ur_editor_content">
     <ul>