diff --git a/db/migrate/20190803022733_add_exec_time_to_evaluate_records.rb b/db/migrate/20190803022733_add_exec_time_to_evaluate_records.rb
deleted file mode 100644
index 0b054e3c..00000000
--- a/db/migrate/20190803022733_add_exec_time_to_evaluate_records.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-class AddExecTimeToEvaluateRecords < ActiveRecord::Migration
-  def change
-    add_column :evaluate_records, :exec_time, :integer
-  end
-end
diff --git a/lib/tasks/users.rake b/lib/tasks/users.rake
index bfa0678c..38535011 100644
--- a/lib/tasks/users.rake
+++ b/lib/tasks/users.rake
@@ -86,10 +86,10 @@ task :add_test_users => :environment do
 
 
 
-  (1..1000).each do |i|
+  (1..2000).find_each do |i|
 
     no = sprintf("%04d", i)
-    phone = "5160731#{no}"
+    phone = "6160731#{no}"
 
     us = UsersService.new
     user = us.register phone: phone, password: 'edu12345678'
@@ -100,7 +100,7 @@ task :add_test_users => :environment do
         平夏,凌旋,孤丝,怜寒,向萍,凡松,青丝,翠安,如天,凌雪,绮菱,代云,南莲,寻南,春文,香薇,冬灵,凌珍,采绿,天春,沛文,
         紫槐,幻柏,采文,春梅,雪旋,盼海,映梦,安雁,映容,凝阳,访风,天亦,平绿,盼香,觅风,小霜,雪萍,半雪,山柳,谷雪,靖易,
         白薇,梦菡,飞绿,如波,又晴,友易,香菱,冬亦,问雁,妙春,海冬,半安,平春,幼柏,秋灵,凝芙,念烟,白山,从灵,尔芙,迎蓉,
-        念寒,翠绿,翠芙,靖儿,妙柏,千凝,小珍,天巧。妙旋,雪枫,夏菡,元绿,痴灵,绮琴,雨双,听枫,觅荷,凡之,晓凡,雅彤,香薇,
+        念寒,翠绿,翠芙,靖儿,妙柏,千凝,小珍,天巧,妙旋,雪枫,夏菡,元绿,痴灵,绮琴,雨双,听枫,觅荷,凡之,晓凡,雅彤,香薇,
         孤风,从安,绮彤,之玉,雨珍,幻丝,代梅,香波,青亦,元菱,海瑶,飞槐,听露,梦岚,幻竹,新冬,盼翠,谷云".split(",")
 
     lastname = l[rand(l.length)] + f[rand(f.length)]
@@ -109,7 +109,7 @@ task :add_test_users => :environment do
         lastname: lastname,
         nickname: '',
         sex: 0,
-        mail: "00educoder#{no}@qq.com",
+        mail: "stueducoder#{no}@qq.com",
         identity: 1,
         te_technical_title: 0,
         pro_technical_title: 0,