The present disclosure relates to a high-resolution precipitation compensation system and method. More particularly, the present disclosure relates to a high-resolution precipitation compensation system and method in which reanalysis data are input as initial data to a high-resolution quantitative precipitation model (QPM), then weights are respectively applied to precipitation data derived from the QPM, radar echo precipitation data and satellite precipitation data, thereby to obtain resulting compensated precipitation data. According to the present disclosure, the reanalysis data is applied as initial data to the high-resolution quantitative precipitation model to obtain precipitation data with a resolution of 0.1 to 1.0 km and a relatively small error for the target region.