This paper is focused on the effect of F-35 horizontal jet.Based on the published data and without overestimating its performance,the F-35 of the dynamic model is established,and simulation is carried out.The simulation results are compared with its flight test data,and also with other highly maneuverable aircraft.It is showed that the simulation result is matched with the flight test data,and the jet effect is very helpful for improving the F-35 maneuverability.