Abstract: Aiming at the small-radius cylindrical lens proposed in a new infrared missile laser system, the traditional processing methods of cylindrical lens were analyzed comprehensively, the small-radius cylindrical lens was polished with selected processing techique and different polisher layers, and the results were compared.The process tests were carried out with several types of separator materials, seperators and different swing scopes.The minmun suface roughness of small-radius cylindrical lens achieved Ra 0.005 m,which was superior to the requirement of design drawing for Ra 0.01 m. Then the redundant half cylindrical lens was grinded off in order to meet the plane technical requirment.Finally all the technical specifications of small-raduis semicylindrical lens were satified, and the batch processing could be realized.