The invention discloses a large-mining-height fully-mechanized coal mining face reversed loader feed inlet large-sized coal crushing system which comprises a large-sized coal crushing device arrangedon a fully-mechanized coal mining face main transport stage loader body feed inlet, and a mining equipment train emulsification pump station for providing power for the large-sized coal crushing device. The large-sized coal crushing device is connected with the mining equipment train emulsification pump station through a hydraulic pipeline and a set of valve group; the valve group is controlled tostart and stop through a set of electro-hydraulic control system; high-pressure emulsified liquid is conveyed to each valve group through a hydraulic pipeline; each valve group is provided with a main valve and a corresponding hydraulic oil cylinder reversing valve; the main valve controls the open and the close of a feed inlet in the hydraulic pipeline; and the hydraulic oil cylinder reversing valve controls an oil cylinder to stretch out and draw back. According to the large-mining-height fully-mechanized coal mining face reversed loader feed inlet large-sized coal crushing system providedby the invention, the starting rate of a working surface can be effectively improved, the labor intensity of workers working on the working surface is greatly reduced, and the safety factor of down-hole operation personnel is improved.