It has become an inevitable trend to introduce and improve mature civil Ethernet and undertake the transmission of automobile big data. In the future, the network architecture of ICV will use Ethernet as the main network, and the entertainment system and assisted driving system will use Ethernet as the sub-network, which is compatible with traditional power chassis system CAN (P-CAN) and body comfort system CAN (B-CAN) subnet. The assisted driving system uses Ethernet to transmit big data of high-definition cameras and high-precision radar, and the entertainment system uses Ethernet to transmit audio, video, and audio data. Vehicle-related data (vehicle status data, road environment high-definition video data, radar data) can be transmitted to external clouds, base stations, data control centers, etc. through Telematics modules or V2X (Car2X) methods. The vehicle’s entertainment system controller can download audio and video through Wi-Fi, Bluetooth, etc., so that passengers can enjoy the effect of home theater in the car.