This paper presents a means for dividing the agricultural climate districts and harvest risk districts of potato based on GIS technique and climate resource information.The indicators of climate and risk which includes the fail and lost risks for potato growing in the county WulanCabu in the middle of Inner-Mongolia Autonomous Area are given according to the spatial statistic results of multi-natural resources in the county.Meanwhile a prediction method of natural resources distribution on small grids is applied to all cases chosen here.Using CITYSTAR 3.0,the agricultural climate districts and the harvest risk districts are drawn and shown in geographical maps.The district maps can be provided to the Department of agricultural planting and planning and the Department of agricultural insurance for helping them in district choosing.