The invention discloses an automatic medicine discharging medicine cabinet. The automatic medicine discharging medicine cabinet comprises a rack, sliding rails, a medicine taking hopper, a medicine storage area and a medicine discharging port; the medicine storage area comprises more than two layers of layer plates, all the layer plates are aligned in the vertical direction to be installed on the rack in an equally spaced mode, and one end of each layer plate is provided with more than one medicine discharging devices; the two sides of the side, with the medicine discharging devices, of the medicine storage area are each provided with one sliding rail, the medicine taking hopper is horizontally installed, and the two ends of the medicine taking hopper are slidably connected with the sliding rails respectively; the medicine discharging port is formed in the side, with the medicine taking hopper, of the rack and is in a rectangular shape, and the length of the medicine discharging port is equal to or slightly smaller than that of the medicine taking hopper. According to the automatic medicine discharging medicine cabinet, storage of fragile injection medicine and infusion bottles is convenient, the medicine can be accurately discharged according to the requirements, the structure is simple, the efficiency is high, medicine discharging can be conducted in 24 hours, and the circulating efficiency of the hospital medicine is greatly improved.