Abstract: The use of integrated fire/flight control can effectively increase fire control accuracy, prolong the period of exchanging fire, and improve the percentage of hits. But the further improvement of the attitude tracking accuracy at the area of attacking is limited by a natural aircraft's iner-tial dynamics. This paper presents a new fuselage aiming mode of neutral stable aircraft, which is achieved with the symmetric deflection of flaps and dynamic decoupling for minor disturbance of the angle of attack. This mode transfers an aircraft's model from a short-period oscillation model into a non-oscillation model, which then effectively speeds up the dynamic process of the attitude tracking at the area of attacking, decreases the dynamic error, increases the gust-rejection capability apparently, and achieves the result that the flight path does not change significantly during the process of attitude control, which is the demand of fuselage aiming mode control.This paper takes an aircraft as an example, designs its pitch control system with neutral stability and with sub-neutral stability. And this paper also gives the corresponding results of digital-analog hybrid simulation.