Aiming at the problem that the airborne control system is affected by both disturbance and noiseand the traditional disturbance observer is difficult to effectively suppress the noisea noise-reducing disturbance observer is introducedwhich can resist the influence of disturbance and noise at the same time.Firstlythe principle of the traditional disturbance observer is introducedand the reason why the traditional disturbance observer can not suppress noise is analyzed.Thenthe principle of the noise reduction disturbance observer is analyzedand it is found that the system can obtain better anti-disturbance and anti-noise capabilities by selecting appropriate filter.Finallythe controller and the disturbance observer are designedand the simulation experiments are carried out.The simulation results confirm the theoretical analysis that the system has both anti-disturbance and anti-noise capabilities.