Abstract: Aiming at the critical occlusion culling issues of complicated objects for real-time rendering,the concept of component visible cone is defined to describe the visible region when the occlusion fusion effected by other components are considered,which can be used for fast visibility test.In this paper the occlusion culling algorithm based on the component visible cone is proposed,and a typical virtual architecture environment is employed as a case for experimental analysis,the results prove that the visibility test during the rendering is simplified dramatically by means of the precomputed visible cone,the efficiency of real-time rendering is therefore improved remarkably.