With the development of microelectronics, optoelectronics, solar photovoltaic technology and the integration of optics and electronics and increasingly fierce competition in domestic and foreign market, advanced manufacturing technology of aspheric optical components is increasingly becoming an important manifestation of a country's manufacturing capability. It is the constant pursuit goal to develop new aspheric processing technology, improve processing accuracy and efficiency and reduce the aspheric processing cost. The techniques parameters such as grinding process, polishing process and polishing equipment for fabrication technology of Φ76.2 mm aspheric lens are researched. Two-step polishing method combined with elastic model pre-polishing and corrective polishing with small tool is used to polish accessory surface quickly. A set of standard numerical control processing technology for aspheric surface is introduced, and the influencing factors are analyzed.