Abstract: Regional climate modeling is one of the methods developed in recent years to study the climate and climate change on regional basis. Owing to better description of terrain features and underlying surface condition, and incorporating of detailed land-surface process, the regional climate model can be used to capture regional-scale temperature and precipitation distributions as well as features of soil moisture variation, which are difficult to be resolved by GCMs. In addition, the regional climate simulation is important for understanding regional response of global warming and effect of ecology and environment caused by greenhouse gasses forcing. The present paper makes an attempt to summarize the state of the art of regional climate model and numerical simulation results, and addresses the problems to be further studied.