1. "Z" shape correction: It is suitable for mild lip valgus deformity caused by cord-like scar traction. 2. "V-Y" sliding flap correction: suitable for lip ectropion caused by small skin defects on the upper and lower lips. 3. Nasolabial fold flap correction: It is suitable for lip valgus deformities with wide upper and lower lip defects, deep scars, and free skin grafting that is difficult to achieve satisfactory results.