Cleft lip is a common clinical congenital deformity. Due to many factors such as local tissue development abnormalities and phase I surgical methods and techniques, cleft lip deformities of varying degrees can still occur several years after cleft lip surgery and require a phase II repair. In clinical practice, we often see adults with cleft lips who are unaware of the need for re-repair. The secondary deformities of cleft lip patients are: 1) wide upper lip scar, and most of them are straight; 2) uneven lip red line, partly accompanied by obvious cut marks, and discontinuous lip arch line; 3) loose upper lip, not compact, and insufficient or too long descent on the affected side; 4) collapsed nose on the affected side, hollow nasal base, wide nostrils, and deviation of nasal column to the healthy side, accompanied by shortening in severe cases. The second-stage cleft lip repair surgery is to design a repair plan for these deformities and according to the actual situation of the patient. Under what circumstances can cleft lip repair not be done? 1, white blood cell count higher than normal, abnormal coagulation function; 2, acute infection, cold, upper respiratory tract infection; 3, facial, perioral and otorhinolaryngologic inflammatory diseases; 4, tonsils too large may affect the breathing after surgery.