diff --git a/app/views/student_work/_programing_work_show.html.erb b/app/views/student_work/_programing_work_show.html.erb
index d6977325c..8e7c58dc3 100644
--- a/app/views/student_work/_programing_work_show.html.erb
+++ b/app/views/student_work/_programing_work_show.html.erb
@@ -25,7 +25,7 @@
 
     <li >
       <span class="tit_fb ">编程代码：</span>
-      <div class="showHworkP break_word"><pre id="work-src" style="display: none;"><%= work.description if work.description%></pre><div class="fontGrey2 font_cus" id="work-code">
+      <div class="showHworkP break_word"><pre id="work-src" style="display: none;"><%= work.description if work.description%></pre><div class="fontGrey2 font_cus" id="work-code_<%= work.id%>">
         </div>
       </div>
       <div class="cl"></div>
diff --git a/app/views/student_work/_student_work_list.html.erb b/app/views/student_work/_student_work_list.html.erb
index 1eea8f1c2..53e57fd9c 100644
--- a/app/views/student_work/_student_work_list.html.erb
+++ b/app/views/student_work/_student_work_list.html.erb
@@ -63,7 +63,7 @@
                   } else if(language==4){
                       program_name = 'text/x-java';
                   }
-                  var editor = CodeMirror(document.getElementById("work-code"), {
+                  var editor = CodeMirror(document.getElementById("work-code_<%= work.id%>"), {
                               mode: {name: program_name,
                                   version: 2,
                                   singleLineStringErrors: false},
diff --git a/app/views/student_work/show.js.erb b/app/views/student_work/show.js.erb
index 477f06e0f..afa03bff8 100644
--- a/app/views/student_work/show.js.erb
+++ b/app/views/student_work/show.js.erb
@@ -17,7 +17,7 @@ else{
       program_name = 'text/x-java';
     }
 
-    var editor = CodeMirror(document.getElementById("work-code"), {
+    var editor = CodeMirror(document.getElementById("work-code_<%= @work.id%>"), {
           mode: {name: program_name,
             version: 2,
             singleLineStringErrors: false},
diff --git a/db/migrate/20160310033019_delete_student_work_data.rb b/db/migrate/20160310033019_delete_student_work_data.rb
new file mode 100644
index 000000000..a7ce60953
--- /dev/null
+++ b/db/migrate/20160310033019_delete_student_work_data.rb
@@ -0,0 +1,8 @@
+class DeleteStudentWorkData < ActiveRecord::Migration
+  def up
+    StudentWork.where("homework_common_id = 2604 AND user_id = 10763 AND final_score = 0").destroy_all
+  end
+
+  def down
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 801cee004..abaafdf80 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20160309024051) do
+ActiveRecord::Schema.define(:version => 20160310033019) do
 
   create_table "activities", :force => true do |t|
     t.integer  "act_id",                                  :null => false