The invention provides a vehicle cloud self-adaptive cruise control system and method based on identity identification. The system comprises an identity identifying module, a touch screen interactionmodule, a forward direction sensor, a backward direction sensor, a vehicle speed sensor, an accelerator and braking travel sensor, a storage module, a 5G transmitting module, a control module and a vehicle cloud-side server. The method comprises the following steps: through an information fusing method, fusing data collected by the sensors by the control module; screening and packaging the fused data by the control module, and transmitting the fused data to a cloud-side by the 5G transmitting module, and creating a set of a unique identification code, a vehicle model code and a driving data set; creating and updating an ACC scheme through using a two-stage method by the cloud-side, reinforcing a learning algorithm in the first stage; and circulating a neural network algorithm in the secondstage. The advantage is that bicycle cost is reduced, and a data utilization ratio and man-vehicle interactivity are improved. The ACC scheme of the method is more complied with driving intention ofa person and suitable for driving habits of different drivers.