Because of its large area, heavy weight, processing quality is difficult to guarantee, and the production efficiency is extremely low, which seriously limits the development of such products. Consulting the domestic and foreign scientific and technical literature, The research on processing technology of large-aperture optical lens is seldom involved.At present, the commonly used process is still the traditional processing method, the production quality is difficult to guarantee, and the production efficiency is extremely low. High-speed processing technology of spherical optical lens with diameter of something 200mm ~ something 300mm process adopts the process of fixing the lens on the main shaft to carry out the active rotation movement, and the mold is on the top, and the mold moves according to the rotation of the lens. In order to obtain a stable surface profile, the principle of surface forming was analyzed, and the technological factors in the actual production process were studied. Processing of large diameter spherical optical lens, Milling adopts vertical milling machine for processing, The processing time is about 30~60s; The fine grinding is processed by fixed abrasive diamond pellets, Divided into two sand W14 and W7 matching, The processing time is about 30s and 20s respectively; The polishing mould is made of polyurethane polishing sheet. The processing time is about 300s.The processed lens is tested for the shape,PV is 0.227λ, RMS is 0.024λ. And the ideal processing effect is achieved.