Abstract: Based on the introduction of the working environment of the new multi-function roadway repairing machine and the composition of the electric control system, a new multi-function roadway repairing machine electrical control system using distributed control mode is proposed.The system communicates with each other through CAN bus, and each system cooperates with each other to coordinate and control, and respectively bear the different functions of the system, and improve the stability, flexibility and reliability of the whole electrical system. The field application shows that the whole electrical control system has reasonable structure, stability and reliability, reduces the manual work and improves the efficiency of the equipment.