The invention discloses a multi-specification aluminum alloy stamping device, and relates to the technical field of hardware stamping equipment. The multi-specification aluminum alloy stamping devicecomprises a machine box, the inner wall of the machine box is connected with a gear box through a sliding block in a sliding mode, the top of the gear box is fixedly provided with a supporting block,the top of the supporting block is fixedly connected with a hydraulic telescopic rod, and the top end of the hydraulic telescopic rod is fixedly connected with the top of the inner cavity of the machine box. According to the multi-specification aluminum alloy stamping device, a plurality of fixing sleeves are arranged at the bottom of the gear box so that a plurality of first stamping dies can beinstalled in the fixing sleeves according to requirements, the hydraulic telescopic rod stretches to enable the gear box to drive the first stamping dies to descend, and punching is carried out on a material; according to the number of the installed first stamping dies, a single hole can be punched, and a plurality of holes can also be punched at the same time, so that the application range is wide, the production efficiency is high, a plurality of sets of equipment is not required, and the cost is saved; and the first stamping dies are fixed through the detachable fixing sleeves, so that dismounting is convenient, and the use is simple and convenient.