In view of the current largescale cylindrical aluminum castings, the removal of the casting pouring riser is mainly carried out by manual, low efficiency and great harm to workers’ body. A largescale cylindrical aluminum casting pouring riser automatic cutting and grinding machine tool was developed. The process plan and overall layout of the machine tool were introduced. The mechanical structures of the cutting device, the grinding device and the waste gripping device were introduced, the design of the cutting device was focused on. The efficiency of the pouring and riser removal was greatly improved with a circular cutting and grinding solution. It can be applied to different types of cylindrical castings by changing the positioning elements, the applicability of the equipment is high, and it has certain reference value for the design of other similar products.