The nose is located in the central bulge of the face in the shape of a triangular cone, rich in a strong sense of three-dimensional, is an important organ of the human body, with breathing, smell, protection, reflexes, resonance and other physiological functions. The nose is divided into three parts: the external nose, the nasal cavity and the sinuses. The external nose is narrow at the upper end and gradually becomes wider and fuller downward, making it the most prominent organ of the face. As the nose is located in the prominent position in the middle of the face, its complete shape and proportional coordination are crucial to the perfection of the appearance. The beauty and ugliness of the nose not only determines the features of a person’s appearance, but also shows the person’s intelligence and character, so the cosmetic surgery of the nose is one of the key points of cosmetic surgery. The shape, size and length of the normal nose varies according to ethnicity. Caucasians have a higher bridge and larger nose; yellow people have a flatter nose; black people have a larger (wider) nose. The same ethnic group also varies from person to person. A beautiful nose must be in harmony with the shape of the whole face and other features to be the most appropriate.