diff --git a/app/controllers/games_controller.rb b/app/controllers/games_controller.rb
index 2b9ec4631..3bbfa1705 100644
--- a/app/controllers/games_controller.rb
+++ b/app/controllers/games_controller.rb
@@ -203,7 +203,7 @@ class GamesController < ApplicationController
     next_game = @game.next_game
     next_game.update_attributes(:status => 0, :open_time => Time.now) if next_game.status == 3
 
-    redirect_to myshixun_game_path(next_game, :myshixun_id => @myshixun.id)
+    redirect_to myshixun_game_path(next_game, :myshixun_id => @myshixun)
 
   end
 
diff --git a/app/controllers/myshixuns_controller.rb b/app/controllers/myshixuns_controller.rb
index fe0dadbad..eb1c62a8a 100644
--- a/app/controllers/myshixuns_controller.rb
+++ b/app/controllers/myshixuns_controller.rb
@@ -51,7 +51,7 @@ class MyshixunsController < ApplicationController
   private
   # Find myshixun of id params[:id]
   def find_myshixun
-    @myshixun = Myshixun.find(params[:id])
+    @myshixun = Myshixun.find_by_identifier(params[:id])
   rescue ActiveRecord::RecordNotFound
     render_404
   end
diff --git a/app/models/myshixun.rb b/app/models/myshixun.rb
index ce0e08623..cd7a035a3 100644
--- a/app/models/myshixun.rb
+++ b/app/models/myshixun.rb
@@ -6,6 +6,11 @@ class Myshixun < ActiveRecord::Base
   has_many :games, :dependent => :destroy, :order => "games.id ASC"
   belongs_to :shixun
 
+  # id 转换成 identifier
+  def to_param
+    identifier
+  end
+
   # 当前任务：一个实训中只可能一个未完成任务(status 0或1只会存在一条记录)
   # status:0 可以测评的，正在测评的
   # 如果都完成，则当前任务为最后一个任务
diff --git a/app/models/shixun.rb b/app/models/shixun.rb
index 9cd7c320a..f071f23dc 100644
--- a/app/models/shixun.rb
+++ b/app/models/shixun.rb
@@ -9,8 +9,6 @@ class Shixun < ActiveRecord::Base
   has_many :myshixuns
 
   # id 转换成 identifier
-  # 如果是整数就去ID，否则就取login
-  # 含有特殊符号的则显示ID
   def to_param
     identifier
   end
diff --git a/app/views/shixuns/_form.html.erb b/app/views/shixuns/_form.html.erb
index fc1ce97f8..b8a2176d1 100644
--- a/app/views/shixuns/_form.html.erb
+++ b/app/views/shixuns/_form.html.erb
@@ -33,7 +33,7 @@
         </li>
         <li class="mb5 ml63">
           <label class="fl">&nbsp;语言&nbsp;&nbsp;：</label>
-          <%= select_tag :language, options_for_select(["Java","C","C++","Python","Ruby"], "Java"), :id => 'shixun[language]', :class => "ml5", :style => "height: 28px;" %>
+          <%= select_tag :language, options_for_select(["Java","C","C++","Python","Ruby","Mysql-Java"], "Java"), :id => 'shixun[language]', :class => "ml5", :style => "height: 28px;" %>
         </li>
         <li class="mb5 ml70">
           <label >&nbsp;公开&nbsp;：</label>
diff --git a/db/migrate/20170425093133_sync_identifier_to_myshixun.rb b/db/migrate/20170425093133_sync_identifier_to_myshixun.rb
index b927c6690..c8daaf31d 100644
--- a/db/migrate/20170425093133_sync_identifier_to_myshixun.rb
+++ b/db/migrate/20170425093133_sync_identifier_to_myshixun.rb
@@ -1,7 +1,9 @@
 class SyncIdentifierToMyshixun < ActiveRecord::Migration
   def up
-  end
-
-  def down
+    myshixuns = Myshixun.all
+    myshixuns.each do |myshixun|
+      identifier = myshixun.shixun.try(:identifier)
+      myshixun.update_attribute(:identifier, identifier)
+    end
   end
 end