Embodiments of the present invention provide a network device and a data backhaul implementation system and method, which can implement centralized and dynamic allocation of backhaul resources in a network and improve a data backhaul capacity of the entire network. The method includes: obtaining, according to channel state information, a backhaul request of a second network device, and residual backhaul capability information of a third network device, backhaul control information used for controlling the second network device and the third network device to backhaul data, where the backhaul control information includes backhaul network topology control information and physical resource allocation information; and sending the backhaul control information to the second network device and the third network device, so that the second network device and the third network device backhaul data according to the backhaul control information.