A preparation method for aspherical bionic compound eye is proposed.The compound eyes of insects are composed of many tiny independent ommatidia,and these ommatidia along the surface of the array distribute on both sides of the head to achieve large angle viewing.The array of non-uniform substrate surface is designed for micro-lens structure,and the focal lengths and sizes of radial arrayed micro-lenses are all different.According to geometrical optics imaging principle,size parameters of all level micro-lenses are computed,and the constructed model is carried out by ray-tracing and the size parameters of all level micro-lenses are optimized.The technical characteristics of different preparation methods are analyzed,and material properties and the relationship between different materials are studied,so a simple and fast preparation method for aspherical bionic compound eye is proposed.In this method,the mold of aspherical compound eyes is manufactured by precise five-axis CNC machine and then the aspheric compound eye structure is transferred out by perfusion pressure method to obtain the desired aspherical compound eyes.The simulation and experimental results show that the imaging quality of the entire bionic compound eye’s surface edge has improved significantly,and each sub-channel is able to obtain valid bright spots.