The scar of the surgical incision is hidden in the mouth and will not leave a scar on the face. The redundant mucosa and hyperplastic mucous gland tissue were removed, and the lip became thinner obviously after operation, and the operation effect was ideal. It should be noted that before the operation, in order to make the lip bead of the upper lip obvious and increase the aesthetic feeling, we should pay attention to the radian when designing the incision. In addition, the width of lip mucosa and submucosal tissue should be based on the degree of lip beautification after operation, generally 4~6 mm, and the longitudinal section of the two incisions should be at an angle of 70~90 degrees. After excision of the cut mucosa, cosmetic suture should be performed. Not only did the lips become thinner after the operation, but they also looked better.