Wth rapid development of science and technology, people＇s life cannot leave the network. Network is very important for enterprise office, has become an indispensable part .The establishment of the office LAN is convenient for the communication between different departments. LAN security is related to the interests of the enterprise. Because the network is very complex, there are a lot of potential safety problems, so the establishment of the office LAN needs to identify the ability of security risks, application of effective database security access technology can achieve stable operation enterprise, this article discusses the application of the database secure access technology from the office LAN for the security risks for reader reference.