The machine is controlled by the PLC, suitable for processing 5-30mm thickness of flat glass and steric pattern. Glass is conveyed by the belts, when glass arrive to the place for sandblasting, the guns which are drive by belt will move up-and-down and spurt out sand. The height and the width of sandblasting can be adjusted according to the requirement. The advantages of the belts are stable transmission, high efficiency and easy maintenance. The drive structure of the sandblasting gun is outside the machine which make benefited to a long period normal working and daily maintenance. The machine adopts the PLC for controlling, which brings easy operation and exploration the glass position automatically when sandblasting.