Abstract: In this paper, the characteristics of “Beidou” satellite positioning system are analyzed. The idea of “Beidou” GEO satellites combined with some MEO satellites constellation to perfect Chinese regional satellite positioning system is put forward. The details of general satellite constellation opimization method are presented, and the comparison of different design ideas and different orbital constellation concepts is given. Through simulation and comparison, among those design schemes, 2 GEO plus some MEO satellites scheme is chosen to be the final optimized one. With respect to the chosen constellation cover performance, the PDOP characteristics are calculated.