diff --git a/handler/MysqlDB.py b/handler/MysqlDB.py
index 62bee3f..a0738ec 100644
--- a/handler/MysqlDB.py
+++ b/handler/MysqlDB.py
@@ -7,6 +7,7 @@ database_passwd = "guest1234"
 database_name = "GUESTDB"
 table_name = "user_info"
 
+DEBUG = False
 
 # 打开数据库连接
 db = pymysql.connect(host=database_ip, user=database_user, password=database_passwd,  database=database_name )
@@ -24,9 +25,27 @@ def DB_Check_byName(user_name):
         passwd = results[0][2]
         return passwd
     except:
-        print("There is no the user's info !")
+        if DEBUG:
+            print("There is no the user's info !")
         return False
 
+
+def DB_Check_byEmail(email):
+    sql = "SELECT * FROM %s WHERE user_email='%s' " % (table_name,email)
+    try:
+        # 执行SQL语句
+        cursor.execute(sql)
+        # 获取所有记录列表
+        results = cursor.fetchall()
+        passwd = results[0][2]
+        return passwd
+    except:
+        if DEBUG:
+            print("There is no the user's info !")
+        return False    
+    
+
+
 def DB_Insert_User(user_info):
     user_name = user_info["username"]
     user_passwd = user_info["password"]
@@ -38,12 +57,14 @@ def DB_Insert_User(user_info):
         cursor.execute(sql)
         # 执行sql语句
         db.commit()
-        print("Insert user_info successfully!")
+        if DEBUG:
+            print("Insert user_info successfully!")
         return True
     except:
         # 发生错误时回滚
         db.rollback()
-        print("Insert user_info error!")
+        if DEBUG:
+            print("Insert user_info error!")
         return False
 
 
diff --git a/handler/__pycache__/MysqlDB.cpython-36.pyc b/handler/__pycache__/MysqlDB.cpython-36.pyc
index 6b19add..6a0ba71 100644
Binary files a/handler/__pycache__/MysqlDB.cpython-36.pyc and b/handler/__pycache__/MysqlDB.cpython-36.pyc differ
diff --git a/handler/__pycache__/account.cpython-36.pyc b/handler/__pycache__/account.cpython-36.pyc
index fd74217..7e4241b 100644
Binary files a/handler/__pycache__/account.cpython-36.pyc and b/handler/__pycache__/account.cpython-36.pyc differ
diff --git a/handler/__pycache__/auth.cpython-36.pyc b/handler/__pycache__/auth.cpython-36.pyc
index b7ae86d..0b2a5ed 100644
Binary files a/handler/__pycache__/auth.cpython-36.pyc and b/handler/__pycache__/auth.cpython-36.pyc differ
diff --git a/handler/__pycache__/main.cpython-36.pyc b/handler/__pycache__/main.cpython-36.pyc
index 7f64ed6..96819af 100644
Binary files a/handler/__pycache__/main.cpython-36.pyc and b/handler/__pycache__/main.cpython-36.pyc differ
diff --git a/handler/__pycache__/simulation.cpython-36.pyc b/handler/__pycache__/simulation.cpython-36.pyc
index 00d4994..d37dd6a 100644
Binary files a/handler/__pycache__/simulation.cpython-36.pyc and b/handler/__pycache__/simulation.cpython-36.pyc differ
diff --git a/handler/__pycache__/spice.cpython-36.pyc b/handler/__pycache__/spice.cpython-36.pyc
index 5aeae31..73ca7e7 100644
Binary files a/handler/__pycache__/spice.cpython-36.pyc and b/handler/__pycache__/spice.cpython-36.pyc differ
diff --git a/handler/account.py b/handler/account.py
index 0ca8957..2f4bc9a 100644
--- a/handler/account.py
+++ b/handler/account.py
@@ -15,6 +15,27 @@ def add_user(username,password,email=''):
     result = DB_Insert_User({'username':username,'password':password,'email':email,'date':create_time})
     return result
 
+def check_register(username,password,email):
+    check_name = DB_Check_byName(username)
+    check_email = DB_Check_byEmail(email)
+    check_pw = check_password(password)
+
+    if check_name != False:
+        return 1
+    if check_email != False:
+        return 2
+    if check_pw == False:
+        return 3
+    
+    return 0
+
+    
+def check_password(password):
+    if(len(password)<4):
+        return False
+    
+    return True
+
 # USER_DATA = {
 #     'name':'user1',
 #     'password':'1234'
diff --git a/handler/auth.py b/handler/auth.py
index a7d2877..59c0863 100644
--- a/handler/auth.py
+++ b/handler/auth.py
@@ -1,5 +1,5 @@
 from .main import AuthBaseHandler
-from .account import authenticate, add_user
+from .account import authenticate, add_user, check_register
 from .MongoDB import *
 
 DEBUG = False
@@ -62,13 +62,22 @@ class RegisterHandler(AuthBaseHandler):
         password2 = self.get_argument('password2','')
 
         if username and password1 and (password1 == password2):
-            success = add_user(username,password1,email)
-            if success:
-                Mongo.connect(DataBase='example',Collection=username)
-                Mongo.update(behavior='register',tags='auth')
-                self.redirect('/login')
-            else:
-                self.write({'msg':'register fail'})
+            flag_checck = check_register(username,password1,email)
+            if flag_checck == 0:
+                success = add_user(username,password1,email)
+                if success:
+                    Mongo.connect(DataBase='example',Collection=username)
+                    Mongo.update(behavior='register',tags='auth')
+                    self.redirect('/login')
+                else:
+                    self.write({'msg':'register fail'})
+            elif flag_checck == 1:
+                self.write({'msg':'the username is not avaliable!'})
+            elif flag_checck == 2:
+                self.write({'msg':'the email is not avaliable!'})
+            elif flag_checck == 3:
+                self.write({'msg':'the password is too shor!'})                        
+                
         else:
             if DEBUG:
                 print('register again')
diff --git a/handler/main.py b/handler/main.py
index 2d6e685..ea1f37f 100644
--- a/handler/main.py
+++ b/handler/main.py
@@ -8,7 +8,7 @@ class AuthBaseHandler(tornado.web.RequestHandler,SessionMixin):
         return self.session.get('username',None) #session是一种会话状态，跟数据库的session可能不一样
 
 #添加装饰器,装饰需要验证的请求
-class IndexHandler(AuthBaseHandler):    
+class IndexHandler(AuthBaseHandler):
     @tornado.web.authenticated   #@tornado.web.authenticated装饰器包裹get方法时，表示这个方法只有在用户合法时才会调用，authenticated装饰器会调用get_current_user()方法获取current_user的值，若值为False，则重定向到登录url装饰器判断有没有登录，如果没有则跳转到配置的路由下去，但是要在app.py里面设置login_url
     def get(self,*args,**kwargs):
         # self.render('main/index_Zh.html')
@@ -43,13 +43,21 @@ class Index_En_Handler(AuthBaseHandler):
         self.render('main/index_En.html')
 
 #添加装饰器,装饰需要验证的请求
-class Open_Index_Zh_Handler(tornado.web.RequestHandler):
+class Open_Index_Zh_Handler(AuthBaseHandler):
     
     def get(self,*args,**kwargs):
-        self.render('main/open_index_Zh.html')
+        username = self.get_current_user()
+        if username == None:
+            self.render('main/open_index_Zh.html')
+        else:
+            self.render('main/index_Zh.html')
 
 #添加装饰器,装饰需要验证的请求
-class Open_Index_En_Handler(tornado.web.RequestHandler):
+class Open_Index_En_Handler(AuthBaseHandler):
     
     def get(self,*args,**kwargs):
-        self.render('main/open_index_En.html')
\ No newline at end of file
+        username = self.get_current_user()
+        if username == None:
+            self.render('main/open_index_En.html')
+        else:
+            self.render('main/index_En.html')
\ No newline at end of file