Vehicle data transmission method, data transmission device and vehicle

The invention provides a vehicle data transmission method, a data transmission device and a vehicle. The method comprises the following steps: acquiring Ethernet frame data; determining a transmission path of the Ethernet frame data; according to the Ethernet frame data transmission method and system, the simultaneous mirroring of multiple paths of Ethernet frame data can be realized, the comprehensiveness of reading the Ethernet frame data by the data transmission device is ensured, the transmission frequency of transmitting CAN data to the data transmission device by the gateway is reduced, and the data caching frequency of the data transmission device is alleviated. 本发明提出一种车辆的数据传输方法、数据传输装置和车辆，方法包括：获取以太网帧数据；确定以太网帧数据的传输路径；将以太网帧数据发送至数据传输装置，本发明既能实现同时镜像多路以太网帧数据，保障数据传输装置读取以太网帧数据的全面性，同时减少网关向数据传输装置发送CAN数据的传输频率，缓和数据传输装置的数据缓存频率。