The invention belongs to the technical field of flight control, in particular to a lateral control system. The invention utilizes the driver's main control device with instructions, the irreversible full-assist electromechanical control integrated actuation system, the long-wire cable transmission device, the centering spring near the rudder surface, etc., so that the implementation of the mechanical and telex hybrid lateral control system is simple. , light weight, high degree of system integration, two different control methods to increase the redundancy design, with a control backup function, which improves the safety of the aircraft. In the mechanical mode, the attitude control of the aircraft is easy.