The external shape of the nose, due to different races and there are significant differences, such as Europeans and Americans have a high nasal bridge, the frontal bone of the Oriental nasal protuberance is generally wide, low flat. Frontal bone nasal protrusion to the tip of the nose, male approximate straight line, female slightly concave arc, the tip of the nose is slightly curved, the curve is softer. Differences in the external shape of the nose give people a different impression of character. A straight and smooth nose gives people an impression of intelligence and beauty; a rough and straight nose gives men a masculine beauty. A collapsed nose and a wide nose give people a sense of stupidity; a concave and curved nose and a drooping tip give people a sense of sinister, cunning, ferociousness and fear. On the other hand, the nose shape of different races, the structure is basically the same, but there are some differences in size. However, bigger is more beautiful, or smaller is more beautiful? This should be dry according to belong to the human face and torso of the overall form of the face and torso and whether to harmonize with it, it is not difficult to imagine the Western race of the nose mounted on the Chinese face, or the Chinese nose mounted on the face of the Westerners, obviously are not beautiful, because he undermined the overall form of the coordination of the human being. The Laws of Formal Beauty will help to visualize the aesthetics of the nose, and will likewise be instructive in cosmetic nasal surgery. The nose is located in the center of the face. The central axis of the nose divides the face into symmetrical right and left sides, and likewise divides the nose into symmetrical right and left sides, and if nasal trauma results in a crooked nose, the symmetry will inevitably be destroyed. From the forehead hairline to the lower edge of the jaw, divided into three equal parts, the length of the nose is exactly the middle 1/3 of the length, in line with the golden section ratio. Nasal bridge is too long or too short (such as eagle hook nose, short nose), it will destroy the balance and harmony of the nose virtue. Congenital nasal defects, atresia of nostrils after burns will destroy the perfection of the nose. Congenital saddle nose, hump nose, impede the curvature of the nose. All of the above can be corrected surgically to make the nose perfect. In terms of the shape of the nose, the more important contents are as follows: 1, the height of the root of the nose The height of the root of the nose refers to the vertical height of the root of the nose in the line of the inner angle of the two eyes, and it can be divided into three grades: Grade 1 (the height of the root of the nose is 7 mm or less); Grade II (the height of the root of the nose is 7 to 11 mm); Grade III (the height of the root of the nose is more than 11 mm). Length of the nose The length of the nose is generally 6.0~7.5cm. 3. Lateral shape of the nose The lateral shape of the nose is roughly divided into three categories, namely, concave nose, straight nose, and protruding nose. Each category is divided into many types. 4. Nasal tip According to the shape of the nasal tip, it can be divided into three types: small tip (tip of the nose is pointed and small); intermediate tip (tip of the nose is medium in size and moderately rounded); and obtuse-rounded tip (tip of the nose is hypertrophied and obtuse-rounded). 5, the base of the nose The base of the nose can also be divided into three types: upturned, horizontal and sagging 6, nostrils The shape of the nostrils can be generally divided into three types: square, triangular, and oval. The direction of the maximum diameter of the nostrils can also be divided into three types, i.e., horizontal, oblique and vertical. 7. Nasal root depression From the side view of the nasal root point, it can be categorized into four grades; Grade 0 (no depression at the nasal root point); Grade 1 (slight depression at the nasal root point); Grade II (obvious depression at the nasal root point); Grade III (frontal bone connected to the nasal bone with an obvious turn). 8, sinus (1) in terms of height, the nose can be divided into three levels; low (the height of the nose for the nose about 1 / 5 of the height of the nose); medium (the height of the nose for the nose about 1/4 of the height of the height of the nose); high (the height of the nose for the height of the nose about 1 / 3 of the height of the nose). (2) In terms of the height of the protrusion, the nose can be divided into three levels: not protruding (the nose and the side of the bridge of the nose is almost in the same plane); slightly protruding (between not protruding and very protruding); very protruding (the nose is more hypertrophic, more than the side of the bridge of the nose protrudes a lot). (3) In relation to its relationship with the nasolabial groove, the nose can be categorized into three types; the nasolabial groove and nasolabial groove do not converge; the nasolabial groove and nasolabial groove slightly converge; the nasolabial groove and nasolabial groove is completely connected to a straight line. (4) With respect to the depth of the nasolabial folds, the nose can be categorized as inconspicuous, moderate and very conspicuous. However, a very perfect and flawless nose does not exist; the main point is whether the shape of the nose conforms to the characteristics of the people and whether the proportion in the overall shape of the face is harmonious. Some scholars categorize the common noses in life as follows: 1. Ideal Nose. The bridge of the nose is erect, the tip of the nose is round and broad, the size of the nose is moderate, and the proportion of the nose to the face, eyes, and mouth is harmonized. 2.Hawk nose. The root of the nose is high, the upper end of the nose is narrow and protruding, the tip of the nose is tip-like and curved to the front into a hook, and the nasal septum is retracted. 3.Garlic nose. The tip of the nose and the wings of the nose are round and large, and the shape of the nose and the wings of the nose are not obvious. 4.Pilgrim nose. The tip of the nose is located after the nose, and the visibility of the nostrils is large. 5.Small nose. The root of the nose and the bridge of the nose are slightly low compared with the tip of the nose, and the tip of the nose is upward. 6. Small pointed nose. The nose is long and thin, the tip is thin, the nose is close to the tip, and the degree of expansion is not big. 7. Collapsed nose. The nose is flat, the nose and the tip of the nose are large and open. According to the characteristics of our nationalities, some scholars have studied the parameters of the national nasal beauty, which can be used for reference. 1, the position of the nose in the face. Take the root of the nose as the center, take the root of the nose to the outer canthus distance as the radius of the circle, the arc of this circle through the nasal column, the edge of the nose, can show the basic position of the adult nose in the face. For children, the arc of this circle passes through the corner of the mouth; for adults, it passes through the nasal columella and the nasal wing margin. 2, the length of the nose. It accounts for 1/3 of the length of the face. 3, Nasal width. The distance between the lateral edges of the two nostrils, generally equivalent to 70% of the length of the nose. The width of the root of the nose is about 10mm, and the tip of the nose is about 12mm. 4, the height of the nose. The height of the bridge at the root of the nose is generally not less than 9mm, about 11mm for women and 12mm for men, and the average height of the inner canthus (root of the nose) in patients with saddle nose is 4mm. The height of the tip of the nose: the ideal height is generally equivalent to 1/2 of the length of the nose, 26mm for men and 23mm for women, and those lower than 22mm are considered to have a low nasal type. The tip of the nose forms a triangle with the bridge of the nose and the forehead, and the most concave point of the root of the nose is at the fixed point of this triangle. The apex of this triangle is slightly above the line of the inner canthus of the eyes in a high nose bridge, and below this line in a low nose bridge. Most people’s nose root depression point in the two eyes at the level of the inner canthus line. 5. Dorsal line of the nose. Generally parallel to the line from the earwheel to the mandibular body. 6, Nasofacial angle. That is, the forehead to the incisor line, and forehead to the dorsal nasal line angle. The ideal nasofacial angle is 30°~33°. 7, nasolabial angle. That is, the anterior end of the nasal column to the bottom of the nose, and the bottom of the nose to the upper lip of the red lip angle, generally about 90 °. In patients with saddle nose deformity, this angle increases significantly, the length of the nose is significantly shortened, and the deformed features of nostrils facing the sky appear. 8, frontal nose angle. That is, the angle formed between the dorsum of the nose and the eyebrows. Under normal circumstances, this angle is greater than 120 °, equivalent to the upper eyelash margin and the level of the inner canthus. This angle is related to the beauty of the curve of the nose, if less than this angle, the external nose protrudes forward; if this angle is high, it is a long nose deformity; if it is low, it is a short nose deformity. 9. The radius of curvature of the tip of the nose. The ideal radius of curvature of the tip of the nose is 8 to 12mm, and it is not ideal if it is below 8mm or above 12mm. 10. The nostrils are ovoid in shape, and the diameter does not exceed the medial foot of the nose. 11, Nasal width. For the upper part of the nasal column, the sum of the two wing edge line, equivalent to the width of the downward vertical line of the inner canthus of the two eyes. 12, the front and side view of the nose. The golden triangle.