The design and engineering demonstration of general aviation emergency communication, surveillance and rescue service system based on BDS RDSS are described in the paper. After the project is completed, the navigation, communications, surveillance, meteorology, rescue, air traffic control services will be provided for general aviation airplane in Shaanxi province. And this will improve the ability of emergency treatment of low-altitude airspace traffic control department in Shaanxi province, enhancing the BDS system applied in the field of general aviation.