As the foundation for regional soil erosion model,Regional Soil Lose Model can be used for regional rainfall runoff and sediment forecasting, soil and water conservation and environmental issues to support regional macro decision-making.Currently,the model cannot be used effectively for large areas due to its slow computing speed.Aiming at the problems,this paper analyzed the model process and incorporated network parallel computing methodology and corresponding task scheduling rules into the model.The results show that the running time greatly reduced in the revised model and the computational efficiency significantly improved.This method provides a way to solve the problem caused by huge amount of data in GIS model with a feasible scheme.