Suggestion: the surgical principle of thinning thick lips is partial resection to restore the normal shape of red lips. Surgical methods can be divided into "spindle resection" and "vertical and horizontal prism resection": prism resection is to make a spindle incision along the periphery of the heavy lip, wedge the mucosa and submucosa tissue, and then suture the wound in layers; The vertical and horizontal fusiform resection method is to sew a needle on both sides of the upper lip and pull two lines to make the upper lip evert. Transverse fusiform incision was made in the protruding parts of both lips, and longitudinal incision was made in the midline. Excess mucosa and submucosal tissue were removed and sutured in layers.