The series-parallel spot welding machine is a device that splices cylindrical batteries together in series-parallel connection with nickel strips. The device can set the corresponding number of series-parallel connections on the man-machine interface according to the product type. The system can realize up to 10 batteries. The series-parallel welding of the batteries and the removal of artificially reversed batteries. At the same time, it is equipped with an internal resistance test function, which can judge the internal resistance voltage. According to the splicing method, this equipment can weld about 3000 batteries per hour, and the structure design is simple and elegant, and the performance is stable. The system supports manual and automatic multiple working modes, and the programming is simple. The welding head is air-cooled to effectively reduce the heat loss of the welding needle.