The East Asia Reanalysis System (EARS) is driven by ERA-Interim and ERA5 reanalysis data, respectively, and the one-year experimental reanalysis data of 2015 are exported. By evaluating three representative typhoon precipitation processes over South China in 2015 and comparing the effects of different driving fields, it is found that the EARS results driven by ERA5 are more accurate than those driven by ERA-Interim, especially for simulated precipitation in complex terrains such as hills and mountains. Further comparative analysis is conducted between the EARS results driven by ERA5 and ERA5-Land, the new generation land surface reanalysis data of European Centre for Medium-Range Weather Forecasts (ECMWF), which shows that ERA5-Land has a better accuracy of large-scale typhoon precipitation, while EARS reproduces meso- and small-scale processes more completely and simulates precipitation in coastal areas more accurately in particular. In comparison to ERA5-Land, due to the present limit of assimilated observation data and inaccurate selection of physics parameterization schemes, EARS needs improvement accordingly in the future.