Frame structure, frame assembly, chassis system and vehicle

The invention relates to a vehicle frame structure, a vehicle frame assembly, a chassis system and a vehicle, the vehicle frame structure comprises a plurality of beam bodies, at least two beam bodies are internally provided with cavities used for containing media respectively, and at least two cavities are communicated. According to the technical scheme, the vehicle frame structure is optimized, so that the integration degree of the whole vehicle is higher, the space is saved, the cost is reduced, and the performance of the whole vehicle is improved.