Many friends who like beauty makeup know that the number of lips on the face is second only to the eyes, and it has always been the focus of makeup. Beautiful lip shape and rosy color can add some charm to people, while its flexible and delicate movements make people's expressions richer and more vivid. The aesthetics of lips generally includes lip contour shape, thickness, protrusion, color, the ratio of upper and lower lips, bilateral symmetry and so on. Different races, sexes and individuals can have differences in oral and lip morphology, and they can also have different pursuits because of different aesthetic concepts. Orientals claim that the upper lip has a graceful bow curve with obvious lip peak, and the middle part of the upper lip protrudes forward and downward, forming a lip bead. Thickness varies according to gender, thick is the most beautiful for men and thin is the most beautiful for women. The upper lip is slightly larger than the lower lip, and the lower lip is slightly thicker than the upper lip. The lips are ruddy and full of vitality. If a beautiful woman with long eyes and a half-hidden face suddenly lifts her veil, revealing her maw and rotten teeth, it won't be a big spoil the fun. This can only be a pity. Therefore, the beauty of the five senses is indispensable, and we should pay attention to the relative relationship. Lip plastic surgery includes not only common lip augmentation, thick lip thinning and cleft lip repair, but also lip bead reconstruction, labial frenum short correction and dimple formation. The beauty of lips mainly comes from its symbolic meaning and formal beauty. Some people think that the lips themselves do not have the beauty of curves, but they are full of beautiful emotions. Kissing, for example, can be sublimated into beauty. From the point of view of formal beauty, the beautiful lips are slightly thinner and slightly warped than the lower lip, with the two corners facing upwards, the upper lip arched, and the red lip edge is the red lip edge. Viewed from the side, the upper lip is slightly looser and thinner than the lower lip, slightly covered on the lower lip, slightly protruding and inclined. The height of the upper lip is similar to the depth of the nose and forms a 90-degree angle with the columella. The thickness of beautiful lips varies from person to person. Generally, women's upper lip is 8mm thick and their lower lip is 9mm thick. Men are thicker than women by l- 1.5mm, and the width of oral fissure is generally based on the vertical line of pupil. Lip beauty includes: thick lip plastic surgery, thin lip plastic surgery, lip bead plastic surgery, cleft lip, deformity repair after cleft lip plastic surgery, big mouth deformity correction and small mouth deformity correction. Experts in plastic surgery hospitals reminded that lips have always been one of the most important criteria for judging the beauty and ugliness of women's facial features, and the shape of lips can reflect a person's personality and other characteristics. Some deformities on the lips are often the most noticeable. Too thick lips give a dull feeling, and too thin lips give a sly impression. In both cases, the lips may have an incongruous effect on the whole face.