Abstract: A mineral resources'preservation and exploitation order can be built by taking its cheef factors as judging elements,introducing the idea of optimum function and calculating the relative suitability for the mineral resource's exploitation under the condition of the technology,economy,resource and national policy on mining industry by now,based on the principle of hazy mathematics,in order to meet the developing need of the quantitative plan on the mineral resources'preservation and exploitation.The mineral resources'array built above can be used as the foundation when judging whether a special resource is suitable for encouraging,limiting,or forbidding to be exploited.The relationship between two kinds of mineral resources in the order can be used as the basis of resource variety selection when only one can be exploited.