At present, the penetration rate of domain controllers is low, but the domain controller industry remains high. At present, the cockpit domain controller has been applied on a large scale, and the penetration rate will increase the fastest in the future, and the shipment volume will increase significantly in the future. The automatic driving domain controller will start the era of accelerated penetration in 2022 with the launch of the functions above the L3 level of subsequent car companies. The controllers in the body, chassis and power domains are in the early stage, and the subsequent penetration rate is expected to continue to increase.