The global 30m fine land cover product contains 30 types of land cover information in the global land area. The distribution of land surface cover is an indispensable basic information for climate change research, ecological environment assessment and geographical situation monitoring. In recent years, with the enhancement of remote sensing data acquisition and computer storage and computing capabilities, the demand for medium and high resolution land cover products is increasingly urgent. The research and production of surface coverage products including 30 surface feature types are expected to provide data support for diversified surface applications.