diff --git a/category/get_net_info.py b/category/get_net_info.py
new file mode 100644
index 0000000000000000000000000000000000000000..85cfbca0a02f1334ca44623e769f6897012c48a5
--- /dev/null
+++ b/category/get_net_info.py
@@ -0,0 +1,28 @@
+#!/usr/bin/env python
+# -*- coding: UTF-8 -*-
+# cython:language_level=3
+#!coding=utf-8
+
+import sys
+
+if sys.getdefaultencoding() != 'utf-8':
+    reload(sys)
+    sys.setdefaultencoding('utf-8')
+
+from common.decorator_wrap import DecoratorWrap
+
+# net class
+@DecoratorWrap.singleton
+class NetInfo:
+    def __init__(self, t_fileName):
+        # network output file
+        self.__default_file_name = t_fileName
+        # network devices
+        #获得所有网卡设备，包括虚拟网卡和物理网卡，格式为：NAME.TYPE
+        self.__netdevice = {} 
+        #获得已连接网卡设备，格式为：NAME.TYPE
+        self.__netdev_act = {} 
+        #获得支持ring buffer 的已连接网卡设备
+        self.__netdev_ring = [] #
+        #网卡连接状态信息
+        self.__link_status = {}