The automatic mask body machine is mainly used for the automatic forming of flat plane masks. After the entire roll of fabric is unrolled, it is driven by rollers. The fabric is automatically unfolded by automatic hemming, hemming, and the nose bridge. In both sides, the two sides are welded to the seal by ultrasonic welding, and the side seal is cut by a cutter after ultrasonic sealing, and the whole process is automatically controlled.