A design methods of determining the user position information by using the redundant data of the Beidou RDSS station is put forward. The process and key technology of the realization of the active detection of the Beidou RDSS user position based on the design ideas are described in this paper. Based on the proposed methods can realize the location of all the service types of the Beidou RDSS station and then can provide more chance for the application of the Beidou System.