Automatic label feeding, hemming and bag sewing machine unit includes label machine, hemming machine, bag sewing machine head, liftable bag sewing machine column GA1, drive control box, etc. The whole machine is controlled by photoelectricity and has the functions of automatic label feeding (paper label, size: (50-80)*(100-130)mm), automatic hemming, sewing, thread cutting and interlocking with the system, etc. The machine height can be adjusted with the bag size, and can be combined with automatic weighing packaging machine, conveying line and palletising robot to form an automatic production line. The height of the machine can be adjusted according to the size of the bags, and can be combined with automatic quantitative weighing packaging machine, conveying line and palletizing robot to form an automatic production line.     This product is designed with delicate design, simple operation, stable operation and low maintenance rate; it is an ideal product for the feed labeling industry.