diff --git a/app/views/shixuns/_settings_show.html.erb b/app/views/shixuns/_settings_show.html.erb
index 92417f49..72752703 100644
--- a/app/views/shixuns/_settings_show.html.erb
+++ b/app/views/shixuns/_settings_show.html.erb
@@ -1,3 +1,4 @@
+
 <div class="edu-back-white mb10">
   <div class="pt30 pl20 pr20 pb40 bor-bottom-greyE clearfix">
     <span class="fl font-16">配置</span>
diff --git a/db/migrate/20190525060616_modify_exec_time_for_shixun.rb b/db/migrate/20190525060616_modify_exec_time_for_shixun.rb
new file mode 100644
index 00000000..a5602ca8
--- /dev/null
+++ b/db/migrate/20190525060616_modify_exec_time_for_shixun.rb
@@ -0,0 +1,8 @@
+class ModifyExecTimeForShixun < ActiveRecord::Migration
+  def up
+    change_column(:shixuns, :exec_time, :integer, :default => 20)
+  end
+
+  def down
+  end
+end