Abstract In order to analyze the difference of data quality of the Beidou system in the Asia-Pacific region and other areas, we select the data of 10 days from 2 domestic and 3 overseas MGEX continuous tracking stations, then use Anubis software to compare and visualize the data quality of BDS and GPS systems. At the same time, we analyze the multipath effect and signal-to-noise ratio of satellites with different orbit types above C37. The results show that the data integrity rate of each BDS station is 100%. The mean value of pseudo range multipath of each frequency band and each type of satellite is lower than 52.2 cm, and the cycle slip ratio is lower than 1, except for the data of URUM station. The pseudo range single point positioning accuracy is similar to that of GPS, and in the three types of satellite orbit of BDS-3, B1I has the most serious multipath error and the lowest signal-to-noise ratio.