The human lips are turned outward and show part of the mucous membrane, if the mucous membrane of the lips is too convex, it will cause the lips to be too thick. The so-called “thick lips” refers to the thickness of male lips more than 9mm upper lip, lower lip more than 10.5mm; female upper lip more than 8mm, lower lip more than 9mm for thick lips. Thick lips from the aesthetic point of view, always give a person a kind of “stupid” feeling. Thick lips are related to genetic and ethnic characteristics, but also localized chronic infections. If the mucous glands under the lip mucosa for various reasons to stimulate hyperplasia and hypertrophy, under the effect of gravity will also have a tendency to fall down. When talking or smiling, the normal part of the lip muscle contraction forcing the mucous membrane tissue at the drop down sagging turned out to aggravate, but also the formation of double lip deformity. Double lip, also known as double lip or double upper lip, is a congenital developmental abnormality, and is also thought to be related to endocrine disorders. The reason is that in the embryonic period, the mucous membrane and mucous gland tissues on the inner side of the upper lip red lip proliferation, and the formation of double protruding red lip. Heavy lip is mainly seen in the upper lip, mostly in puberty, the most obvious performance, the texture is no different from normal, a few patients may have a family history. The deformity has a great impact on the appearance, when the mouth is closed, the deformity is not visible, when the mouth is open, the two lip edges are visible. There is a horizontal groove between the two lip edges, presenting two clear red lips when smiling. Thick lips and heavy lips can be corrected through cosmetic surgery, which is simple, easy to perform, and the effect is effective and long-lasting. Only the postoperative swelling is more obvious and lasts for about 2-3 weeks. Thick lip thinning surgery is in the upper and lower lip red lip skin and mucous membrane junction, depending on the degree of lip thickness shuttle or jagged excision of a strip of oral mucosa and muscle, and then directly pull together the suture incision, so that the thick lip thinning, 5-7 days to remove the stitches. The incision scar is hidden in the mouth, and the result is ideal. In order to make the postoperative lip bead of the upper lip obvious; increase the aesthetic sense, in the design of the incision should pay attention to the curvature. Remove the width of the lip mucosa and submucosal tissues, should be after surgery lips become beautiful to the extent that the general 4 ~ 6 mm, two incisions of the longitudinal section should be 70 ~ 90 degrees angle, remove the mucosa cut down a mucosa, to be cosmetic suture can make the thick lips thinner. Congenital heavy lips mostly occur in the upper lip, visible upper lip has two lip margins. There is a horizontal groove between the two lip edges. The treatment principle of heavy lip repair is to make partial excision, so that the red lip to restore the normal shape. There are two types of surgery. “Shuttle excision method” and “transverse and longitudinal prismatic excision method”, prismatic excision method is along the peripheral edge of the heavy lip shuttle incision, wedge-shaped excision of mucous membrane and submucosal tissues, and then layered suture wound. Horizontal and longitudinal pike excision method is a stitch on each side of the upper lip, traction two lines to make the upper lip turned out. On both sides of the heavy lip protruding parts of a transverse pike-shaped incision, and the midline part of the longitudinal incision, excision of excess mucosa and submucosal tissues, and then layered suture. 5-7 days after the removal of sutures.