To optimize the layout of aircraft cockpit man-machine interface,an optimized model is proposed based on the pilot visual attention allocation.Firstly,visual analysis module is analyzed in CATIA,different levels of visual field are offered and visual field for the cockpit man-machine interface is rasterized.Secondly,the important degree of each equipment on man-machine interface is analyzed by means of G₁ method, and the quantitative value is gived.Finally,a model of layout optimization for the aircraft cockpit man-machine interface is established based on visual attention allocation,and this model is solved by the particle swarm optimization.The examples of aircraft cockpit virtual man-machine interface show that this method is suitable for the similar problem.