The entire processing of automatic four-sided sealing and packaging machine has included roll film conveying, bag making, material blanking and filling, graphic and text printing, coding, flat pressing heat sealing, easy tear hanging hole punching, plate blanking, finished product output and waste recycling. It can be applied to paper-plastic composite, plastic-plastic composite, aluminum-plastic composite, PE composite, etc. This processing technology is widely used in medical, mask, food, daily chemical and other industries packaging.