Along with the construction and development of hospital WALN, such as infant security, asset management and personnel positioning based on WIFI networking applications are gradually increasing. I am in hospital on the basis of the actual demand, combined with the existing WIFI real-time positioning technology, puts forward a set of application in hospital wireless local area network (WLAN) real-time positioning system, and its basic framework and management control mode are introduced, and the prospect of the WIFI real-time positioning technology research and development direction.