In past 2 years, operation were performed in 20 cases, of which 12 cases were thick lip and 8 cases were double lip. We consider the thick lip isn' t a disease, but the difference of the race and individual variation. It may be diagnosed as the thickness lip and operated if the thick of upper lip exceeds 9mm in male, 8mm in female and the lower lip is thicker than 10.5mm in male, 9.5mm in female. Congenital double lip is a rare deformity. In fetal development, the lip was spearated into two portion transversely by a deep furrow with hypertrophy of small mucous glands and mixed glands. The key points during the operation: (1) Excise the villous part of furrow; (2) Totally remove the hypertrophied submucosal glands; (3) In order to prevent recurrence particular attention was paid to fix suture of the deep muscle.