Abstract: Based on the research on the pilot of Akesu River basin oasis in northwest China, this paper introduces the development and application of the runoff-evaporation hydrological model for arid plain oasis.An anatomization on the relative analyzed results is also provided.It is found that the modeling results fit the water monitoring results well with efficiency value greater than 90% and multi-year average relative error value of 3.6%.The case study indicates that the runoff-evaporation hydrological model works well in arid area, more applications of the model in northwest China may be possible.