As a result, automakers take on more responsibility in developing controllers, software models, and even complete software. At present, it can also be seen that most car manufacturers are developing the application layer of the controller, and the bottom layer and hardware are handed over to suppliers, but there is also a trend for car manufacturers to expand the hardware and chip design of strategic modules. When designing the electrical and electronic architecture, the architect needs to determine the function allocation throughout the life cycle based on the reuse principle.