Aimed for designing much light weight disk with enough strength, after the researches on aero-engine Bladed ring（Bling）in home and abroad have been summarized, mathematical model of light weight structure optimization design for fiber reinforced bling was put forward and established. Based on ANSYS optimization platform, under given load on the ring, parameterization model of structure optimization design for meridian plane of ring was established. Main optimum design variables of meridian plane were chosen, and design constraint conditions of fiber reinforced ring structural optimization were extended and established based on structural design criterion of metal disc. Through structure optimum design of typical fiber reinforced bling, lighter weight ring satisfying all strength constraint was obtained. It is found that the designed ring reinforced by SiC fiber could save 39.92% weight over the corresponding disk under same load, which illustrate that bling is of obviously advantage in weight saving, and the structure optimization design method of the fiber reinforced bling in this paper is effective.