Abstract: In order to study a calculation method for rational supporting intensity of the powered support in mine stope which is based on the big data and adapts to different geological conditions of the mine, analysis was carried out in this paper on the coupling relation between the supporting intensity of the powered support and various influencing factors in geological conditions by using the fuzzy comprehensive evaluation method, and the comprehensive evaluation model for the supporting intensity of the powered support was established. With this evaluation model, analysis was made on the supporting intensity of the powered supports used in several working faces having the similar geological conditions and adopting the same mining method, the regression formulas for calculating the rational supporting intensity of the powered supports used in the working faces having the similar geological conditions and adopting the same mining method were concluded, which can provide a new method for the determination of the rational supporting intensity of the powered supports used in the working face in a new coal mine.