When the traditional method is used for polishing high- precision aspheric surface, the time consumption of surface- shape error compensation is more than 80% of the total polishing time. The efficiency of aspheric surface machining is severely affected. According to the principle of compensation for aspherical surface- shape error, process experiments of error compensation of polishing surface figure is conducted. By calculation and compensation of aspherical surface- shape using the software LOH- data- correct, the times of surface-shape correction and the cost are reduced, the machining efficiency is improved.