The invention discloses welding equipment for motor copper rotors. The welding equipment comprises a base, a fixed base and a welding mechanism; the fixed base is mounted on the base, and is used forpositioning and fixing iron cores and copper bar combination bodies; the welding mechanism comprises a rotating driver, a main shafts, a chuck and a linear driver; the tail end of the main shaft is connected with the chuck; the chuck is used for fixing end rings of a motor; the rotating driver is connected with the main shaft, and drives the main shaft to rotate; and the linear driver drives the main shaft and the chuck to linearly move relative to the iron cores and copper bar combination bodies. The welding equipment mainly adopts an inertia rotating friction welding process to realize welding of the end rings of the motor, copper bars and positioning ring, can realize high-efficiency, high-quality and high-stability welding of copper rotor end rings, is suitable for large-batch weldingproduction of the copper rotors, can select different material combinations of the end rings and the positioning rings, greatly improves the design flexibility of the copper rotors, and can further improve the usability of the copper rotors through optimized material combinations.