Abstract:    In recent years, the development of BDS has greatly promoted the evolution and progress of the domestic GNSS data processing software. In this paper, three commercial softwares including HGO, CGO and South GNSS software have been studied by keeping the threshold elevation angle and sampling frequency the same, the quality of baseline calculation, the position accuracy after netadjustment, and the baseline processing results under BDS and GPS are compared and analyzed. Experiments show that the three commercial softwares are relatively mature, and can meet the D grade GPS control network engineering measurement accuracy requirements. The results of the baseline vector and net adjustment by HGO software are slightly better than the other two kinds of softwares.