Based on the requirements analysis of intra-vehicle electronics data stream transmission, the data transmission architectures of combat vehicle computing platform partitioned by the data type and function are proposed, the features of the architectures are analyzed, the video data transmission architecture is proposed. At last, the networks technologies of the IT domain and the automotive domain which used in combat vehicles are analyzed, the technology solution to implement the intra-vehicle data transmission network is proposed. The study supports the further enhancement of the sustainable levels of our military ground combat system.