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Precipitation, which is the predominant component of the East Asian summer monsoon (EASM), may have large uncertainties among reanalysis datasets. We comprehensively evaluate the performance of five reanalysis datasets in reproducing the EASM precipitation. These datasets are NCEP/NCAR Reanalysis 1 project (NCEP1), NCEP/US Department of Energy Atmospheric Model Intercomparison Project II reanalysis (NCEP2), Japanese 25‐year Reanalysis project (JRA‐25), Interim ECMWF Reanalysis (ERA‐Interim), and Modern Era Retrospective‐analysis for Research and Applications (MERRA). Results show that the five reanalysis datasets can generally reproduce the climatology and interannual variability of EASM precipitation. Especially, MERRA and ERA‐Interim have the highest skills. Considering different‐class precipitation, large uncertainties exist in the category of non‐rainfall and heavy rainfall …