This machine is designed and manufactured upon exporting. It is a computer-controlled full-automatic bag-making machine which combines optic, electric, gas and instrument control. It is suitable for making bags of many kinds of heat-melting film such as PE, PP and PVC and etc. There are such features as photoelectric control automatic material feeding, photoelectric tracing color code in color printing, double working-position feeding and double working position sealing, step or servo motor which controls speed and length of the bag, computer counting and cutting. It is the best machine for producing vest bags and flat mouth bags.