The machine is used to produce the plastic bags on the shape of similar vest or normal flat by the winded films with the natural color or the printed colors. The machine is controlled by the computer. There are some functions of the machine: following the tracks by photoelectric, determining the length of bags automatically, cold cutting, heat sealing & counting the quantity of bags automatically. The machine has shown the merits of advanced designing, reasonable constructions, highly automation & convenience to operating etc.