With the development of Internet, the security of network is more and more concerned. Guangxi weather bureau has lacked network system defence and management for years. Therefore, it is essential and urgent to reprogram network and upgrade the ability of defence system. This article analyzes the structure of the Guangxi weather bureau internet, in accordance with the current overall planning of the network design, which integrates with the General technology of the network security and way of design. It is available to build a more complete and Multi-level project to reform and upgrade the network security.