In order to develop an efficient lapping machine of optical fiber with convex spherical end face, first, it was proposed to classify lapping machine of optical fiber according to the lapping trajectory, then analyzed the characteristics of two typical lapping machines. The results show that the rotary-linear lapping machine is good for lapping the end face of multi-core fiber arranged in matrix,like MPO,because the lapping velocity and material removal rate of optical fiber end face is uniform,while the pla...