To solve the problem of laser drilling on cylindrical surface and improve the effect of drilling and forming,a scanning arc cylindrical focusing scheme is proposed.After the system modulates the pulse laser emitted by the CO2 laser,the incident laser is compressed into a linear spot on the cylindrical focusing mirror,and then laser scanning is realized by rotating anti reflecting prism.The linear scanning spot is focused on the curved surface after passing through arc cylindrical focusing mirror to become a circular spot,which realizes the shaping of the beam and surface drilling.The results show that the spot of 0.15 mm in the curved surface is realized,which meets the industrial production demand including cigarette,and has a larger application space compared with the traditional plane focus drilling method.