Abstract: In this paper, the cumulus parameterization schemes used in WRF model which had been published was described simply, the precipitation forecast between different schemes was experimented contrastively and verified.The results showed that the KF and GD scheme were better than others, the specific performance in rainfall distribution and heavy rainfall intensity, the contribution of convection rainfall to total precipitation, the distribution about high and low system in middle and low layer, and the cold air activities have been variable the intensity and the position of the positive and negative center, KF and GD scheme result can reflect the real state well, TS results show that KF and GD scheme ware better in small level precipitation forecast.