The present study evaluates spatial and temporal characteristics of the Fengyun-3B(FY-3B)\'s outgoing longwave radiation(OLR)data based on NOAA OLR data and the GPCP(Global Precipitation Climatology Project)precipita-tion data over the Asian-Australian region during 2011-2019.In terms of climatological distribution patterns and in-terannual standard deviation,FY-3B OLR are quite consistent with NOAA OLR,with annual and seasonal pattern correlation coefficients all exceeding 0.93.There are some discrepancies in the OLR magnitude between FY-3B and NOAA,especially for the OLR climatology;the climatological OLR from FY-3B are systematically larger than those from NOAA over the whole study region.In addition,examination of the temporal correlation coefficients between OLR and precipitation over the Asian-Australian monsoon(AAM)region reveals that both of the OLR datasets have captured the widespread negative correlation with precipitation,and FY-3B OLR exhibits a stronger relationship to precipitation over land.Moreover,FY-3B OLR exhibits better responses to the precipitation anomalies over India during the extreme El Ni?o and La Ni?a events.These results suggest that the FY-3B OLR dataset is of high quality and worthy of further global application.