In view of the broad market demand of small single (double) cylinder internal combustion engine in China,according to the production and assembly automation requirements of JBZ-23-07 rotor-type motorcycle oil pump,the overall plan of assembly system was designed,the assembly sequence and process of each part were determined,and the problem of assembly control system was focused on.For the control system hardware design,PLC and serial module were selected,PCU and driver wiring was analyzed.The control system software was designed,PCU parameter setting was debugged under CX-Programmer environment,PLC control program and communication program were written,human-computer interaction interface was developed.The experimental results show that the control system can effectively cooperate with the visual system,the upper computer image software system and the actuators to meet the needs of industrial production.