For the choice of lip plastic methods, the following methods are mainly adopted: 1, lip plastic thick lip thinning: according to the thickness of the lip, a piece of oral mucosa and muscle is cut off in a spindle or zigzag shape, and then a suture incision is directly made to make the thick lip thin, and stitches are removed in 5-7 days. The scar of the surgical incision is hidden in the mouth and the effect is ideal. 2. Lip plastic labial frenum is too short: Pull the upper lip upward and outward until it is at right angles to the alveolar bone. With another vascular clamp, push the mucosa close to the inner side of the upper lip to clamp the frenum at the labial groove. At this time, the tips of the two hemostatic forceps are in contact with each other, and the clamped lace is V-shaped between the two hemostatic forceps. Remove the labial frenulum near the two sides of hemostatic forceps, that is, the labial gingival mucosa. 3, lip plastic lip valgus: a surgical method used to solve this defect problem. Including: V-Y advancing flap, Z plasty, nasolabial groove flap, rectangular buccal and neck flap, full-thickness flap repair and so on. After operation, limit mandibular movement, avoid opening mouth, give tube feeding liquid food, appease the children, prevent excessive crying, so as not to cause the wound on the affected side to crack.