As an industrial vehicle specially designed for loading and unloading,the balanced forklift truck is widely used in transportation industries such as ports and docks.At present,more and more people begin to pay attention to the performance and running stability of forklift steering system because of its complicated operating conditions and frequent steering operations.In this paper,to improve the steering performance of a balanced forklift truck,a simulation model of sliding film control system based on active rear wheel steering is established for studying and evaluating its influence on the steering system performance of the forklift truck under different working conditions.