The GPS/Beidou integrated system has more advantages over GPS because it uses the GPS/ Beidou integrated mode receiver for satellite signal quality test. Based on a comprehensive analysis of the experimental data, a qualitative conclusion can be drawn that the Beidou navigation system has some positive effects on positioning with GPS only. Compared with GPS, satellite observation with the GPS/Beidou integrated system has more advantages over GPS on the quantity of visible satellite, the geometric distribution of satellite to observation station and expansion of the CORS network coverage. Moreover, it can improve the positioning capability of receivers.