Abstract: In order to give full play to the resource advantages of continuously operating reference stations (CORS) in the field of landslide geological hazard monitoring, the deformation monitoring data processing strategy based on CORS reference station is analyzed, the effects of observation value type, calculation time and baseline length on monitoring accuracy are evaluated, and the coverage of CORS reference station as monitoring reference is given, It provides important data support for promoting the in-depth application of CORS in deformation monitoring.