The invention discloses a numerical control machine tool drilling process power, energy consumption and energy-saving control method. According to the method, the total power of the drilling process of a numerical control machine tool is decomposed into five parts, namely, a machine tool standby power part, a cutting fluid spray power part, a spindle rotation power part, a Z axis feed power part,and a material drilling power part; the power model of each part is established separately, so that the total power model of the drilling process can be obtained; a drilling time value is calculated through drilling depth and drilling speed; a drilling power consumption model is further obtained by multiplying the total drilling power and the drilling time; the power and energy consumption valuesof a plurality of drilling programs that are practical and feasible are calculated and evaluated according to the established total drilling power model and drilling energy consumption model, and an optimal drilling program of which the power value does not exceed a limit and of which the energy consumption is minimum is selected to perform practical cutting, and therefore, energy-saving control can be realized. The method of the invention is simple and practical, has high energy consumption prediction accuracy, is conducive to achieving energy-saving control, and is convenient to popularize.