diff --git a/.vscode/settings.json b/.vscode/settings.json
deleted file mode 100644
index e762d65..0000000
--- a/.vscode/settings.json
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-  "python.linting.pylintEnabled": true,
-  "python.linting.pylintArgs": [
-    "--disable=C0103",
-    "--disable=C0111"
-  ]
-}
diff --git a/README.md b/README.md
index 1fffce0..d7d9cb6 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,12 @@
 Back end of [vue-data-board](https://github.com/dongsuo/vue-data-board).
 
 ## [Document](https://docs.v11nlab.com)
+
+
+pip install -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple/
+
+- mysql安装失败手动下载https://www.lfd.uci.edu/~gohlke/pythonlibs/#mysqlclient
+
+python manage.py migrate --settings=py_vislib.settings.local
+
+python manage.py runserver --settings=py_vislib.settings.local
\ No newline at end of file
diff --git a/py_vislib/settings/local.py b/py_vislib/settings/local.py
index 8d05a68..1896a97 100644
--- a/py_vislib/settings/local.py
+++ b/py_vislib/settings/local.py
@@ -8,7 +8,7 @@ DATABASES = {
         'ENGINE': 'django.db.backends.mysql',
         'NAME': 'vislib',
         'USER': 'root',
-        'PASSWORD': '123456xxf',
+        'PASSWORD': 'yasaka',
         'HOST': 'localhost',
         'PORT': '3306',
     }
diff --git a/requirements.txt b/requirements.txt
index fca8246..40065c9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 Django==3.0.4
 pycryptodome==3.9.8
 django-cors-headers==3.2.1
-mysqlclient==1.3.13
+mysqlclient==1.4.6
+#dm==1.3
diff --git a/vislib/models.py b/vislib/models.py
index efba69f..579e69a 100644
--- a/vislib/models.py
+++ b/vislib/models.py
@@ -22,8 +22,8 @@ class SourceDataBase(models.Model):
 
 class SourceDataTable(models.Model):
   database = models.ForeignKey(SourceDataBase, on_delete=models.CASCADE)
-  table = models.CharField(max_length=32)
-  table_alias = models.CharField(max_length=32)
+  table = models.CharField(max_length=256)
+  table_alias = models.CharField(max_length=256)
   status = models.IntegerField(default=1)
   creator = models.ForeignKey(User, on_delete=models.CASCADE)
   id = models.CharField(max_length=64, primary_key=True)
diff --git a/vislib/views/source.py b/vislib/views/source.py
index 6d29550..8eb0ecb 100644
--- a/vislib/views/source.py
+++ b/vislib/views/source.py
@@ -151,7 +151,7 @@ def sourceTableSave(request):
       id=uuid.uuid4(),
       database=source,
       table=table['table'],
-      table_alias=table['table_alias'],
+      # table_alias=table['table_alias'],
       creator=request.user,
       status=table['status'],
       updated_at=default_datetime()