Face shape, that is, facial contour, is the most basic part of a person's appearance. The upper part of the face is an arc structure composed of maxilla, cheekbone, temporal bone, frontal bone and parietal bone, while the lower part of the face is determined by mandible. There are many factors that affect the beauty of the face, and the mandible plays a particularly important role in determining the basic structure of the face. For example, China beauty's ideal oval face is slightly round on the top and slightly sharp on the bottom, and the ratio of length to width is completely in line with Huang Jinlv.

After more than ten years of clinical practice in plastic surgery, Dean Jin found that the beauty of a person's appearance is mainly reflected in the lower part of the face, because there are two S-shaped curves from nose to lips and from lips to chin, which is the part that can best reflect the beauty of facial curves. The length of the face and the shape of the lower half depend on the shape and size of the chin. Therefore, the mandible is of special importance in appearance, and the mandibular angle constitutes the most basic line in facial contour. Jin believes that the nose is located in the center of the face, and together with the eyes, it is an important part that determines the beauty of the five senses. The height, length and width of the nose are the balance of the face. A straight and handsome nose can give an elegant and unique impression. Rhinoplasty is very common in daily life and is one of the top ten most popular plastic surgery projects.

According to years of experience, Jin pointed out that the beauty of the nose mainly has the following criteria:

1, trisection standard: The trisection of face is also one of the classical aesthetic standards, which is called the "three courts and five eyes" rule in China. As far as the face is concerned, the first part is from forehead to eyebrow arch, the middle part is from eyebrow arch to alar bottom, and the second part is from alar bottom to chin bottom. Modern aesthetic research also confirms the objectivity of the third part. The length of the nose is equal to 1/3 of the face length, and the width of the nose should be 1/5 of the face width. A nose close to this ratio has harmonious beauty.

2. golden ratio standard: the golden ratio of each part of the nose is: the ratio of the length of the nose to the length from the forehead to the nose is 0.618; The ratio of nose width to lip width is 0.618; The ratio of tip height to tip width is 0.6 18. The golden section of the vertical line from the forehead to the tip of the nose is the best starting point of the nasal root, and the external nose close to this ratio has harmonious beauty.