Summarizing the practice, this design is based on the FlexRay bus technology, and it is believed that the core vehicle body electronic control system unit is small in size, low in power consumption, high in stability and cheap in price. Especially FlexRay data communication has higher transmission speed, higher reliability and stability, and better anti-interference ability. Microcontrollers are designed with co-processors, which can serve any peripheral modules, which undoubtedly relieves the workload of the CPU and enables the electronic control system unit to operate normally under heavy loads. However, the electronic control system unit still needs further research and improvement. If it is put into practical automobile application, the application of communication network, the dynamic part of data monitoring and data storage still need further research and improvement.