The invention relates to the technical field of automobile three-way catalytic converters, in particular to dismantling equipment for an automobile three-way catalytic converter. The dismantling equipment comprises an upper frame, an upper support, a top disc, a cutter assembly, a vertical top plate, a V-shaped bottom frame, vertical guide columns, a rack, a cutter guide plate, a connection plate, a bottom funnel and a hydraulic cylinder. The upper frame is fixed to the upper support. The upper support is fixed to the top disc. The top disc is fixed to the vertical top plate. The two sides of the vertical top plate are connected with the vertical guide columns correspondingly. The bottoms of the vertical guide columns are fixed to the cutter guide plate. The cutter guide plate is fixed to the rack. The hydraulic cylinder is fixed to the upper frame. A piston rod of the hydraulic cylinder penetrates through the top disc and is connected with the cutter assembly. The two sides of the cutter assembly are in side fit with the vertical guide columns. A cutter is fixed to the cutter assembly. The V-shaped bottom frame is located on the two sides of the cutter guide plate and connected with the rack. According to the dismantling equipment, the structure is simple, manual operation is reduced, and operation safety is high. By using the dismantling equipment, waste of recyclable resources can be reduced, and the dismantling efficiency is improved.