Contour: The standard interpretation of Chinese literature is the line of the outer edge of an object or figure, and facial contour is the line of the outer edge of the face. Facial contour beauty is the primary condition and the most significant symbol of human physical beauty. Facial contour is related to the structure and form of human facial soft tissue and bone tissue. Facial contour plastic and cosmetic is based on the aesthetic standards of facial contour, the application of surgical methods to make the normal facial contour to get the aesthetic perfection. Women should have a feminine, clear, quiet, kind, gentle and elegant facial profile, which is an inverted vertebral (heart-shaped) profile from the front, with the wide end of the cone on top, representing the full frontal, temporal and zygomatic areas of the face; the gradually narrowing lower end represents the rounded jaw profile of the face. Men should have a rigid, majestic facial profile, with the top and bottom basically the same. Reasons for changes in facial contour: 1. Physiological reasons: Developmental maturity is present, such as forehead, temporal (commonly known as temples) sunken, showing a low, sunken appearance, low nose without three-dimensional, short chin (chin), lack of rounded, smooth, slightly curved jaw profile. 2, age-related reasons: with the increase of age, the volume of bone tissue resorption becomes smaller, the tension of facial soft tissue decreases, loosening and sagging. Subcutaneous fat changes from rich, even and balanced distribution in youth to uneven, tissue volume decreases, there is local atrophy, showing depression, local accumulation, such as nasolabial folds. The muscles contract repeatedly and wrinkles appear on the skin surface. Make facial contour gradually lose round, smooth, young appearance. 3. Surgical causes: due to surgery to make the bony support (such as cheekbone, jawbone removal after surgery) change, the whole layer of soft tissues of the face sag, so that the three-dimensional, three-dimensional, convex and curved young contour changes to flat, non-curved and loose appearance. Second, the treatment method: facial contour changes with full soft tissue sagging, tissue volume reduction or local accumulation, and skin surface wrinkles. Aesthetic refinement of these changes by surgical methods is the purpose of treatment. 1. Surgical method: Upward lifting and tightening of the sagging soft tissues of the face to restore a firm, smooth, round and youthful appearance. Rhinoplasty, rhinoplasty, chin augmentation. Cheekbone, mandibular plastic surgery, to achieve a three-dimensional, aesthetic profile. 2, minimally invasive methods: the use of minimally invasive methods with light trauma, little pain and fast recovery, such as minimally invasive three-dimensional suture suspension to lift and tighten sagging tissues. Minimally invasive liposuction of the face, minimally invasive autologous fat filling facial depressions. 3, non-invasive (injection) methods: tissue volume reduction is an important reason for facial contour changes, painless and non-invasive injection filling is the best method. With the development of science and technology, the safety and effectiveness of the injectable filling materials are guaranteed, the filling materials available are abundant and diverse, and the unique effect of the filling method is also fully revealed. As people are busy with their work and pursue individual facial contour, injection methods can meet the effect of no rest, fine sculpting, and many changes. For example, nose and chin augmentation injections can achieve precision, variability, and individuality in the degree of augmentation, and can show the chin’s foreshortening. The correction of nasolabial folds and eye and nose furrows is more precise and effective with injections. Botulinum toxin bite muscle slimming effect is precise and effective.