Abstract: The mining plan evaluating is a typical multi-objective decision problem. The ranking index and its importance coefficient are provided subjectively by people in traditional decision so that the objectivity of evaluating system is difficult to guarantee. The C²R model of DEA method is used to judge the relative validity of the design plan objectively and can reflect the basic design principle well. At the same time, the relative bad scheme of the system is constructed, every efficiency index of scheme is calculated in evaluating system and its order can be analyzed effectively. The relatively valid "projection" of the noneffective design plan can be used to judge its deficiency and design the improved plan of directly. The model is simple and convenient, decision information abundant. It has stronger pertinence and effectiveness in many design plans.