Thinning of thick lips is to remove an oral mucosa and muscle in a spindle or zigzag shape at the junction of upper and lower lip skin and mucosa, and then directly make a suture incision to make thick lips thinner, and take off stitches in 5-7 days. The scar of the surgical incision is hidden in the mouth and the effect is ideal. Taking the upper lip as an example, under the anesthesia of infraorbital foramen block (in order to prevent the swelling of the upper lip during operation, local infiltration anesthesia is generally not used), an approximately shaped incision is made on the inner side of the lip (in the mouth) to make the lip bead of the upper lip obvious after operation; Increase the aesthetic feeling of the paint, and pay attention to the radian when designing the incision. The width of lip mucosa and submucosa should be 4~6 mm after operation, and the longitudinal sections of the two incisions are at an angle of 70~90 degrees. After the cut mucosa is removed, the thick lip can be thinned by suture.

Congenital double lips mostly occur in the upper lip, indicating that the upper lip has two lips. There is a horizontal groove between the lips. The treatment principle of double lip repair is partial resection to restore the red lip to its normal shape. There are two operations. "Spindle excision method" and "transverse and longitudinal prismatic excision method", the prismatic excision method is to make a spindle incision along the periphery of the heavy lip, wedge into the mucosa and submucosa tissue, and then sew the wound in layers. Vertical and horizontal fusiform resection is to sew a needle on both sides of the upper lip and pull two lines to make the upper lip evert. Make a transverse fusiform incision at the protruding part of both lips and a longitudinal incision at the midline. After removing the redundant mucosa and submucosal tissue, the stitches are removed layer by layer, and finally the thick lips are gradually thinned.