Abstract: The satellite Based Augmentation System (SBAS) can enhance the performance of GNSS positioning and integrity service to meet the needs of civil aviation users. The ground monitoring station is an important part of SBAS, and its composition, layout, and data quality have an important impact on the service performance of SBAS. Therefore, based on the actual observation data from the WAAS and EGNOS, the composition and distribution, the antenna distribution, the data quality, and the multipath correlation of the ground monitoring station are analyzed in detail in this article. And a general method for the composition and deployment of the SBAS ground monitoring station is summarized, which provides a reference for the implementation of SBAS monitoring station construction.