Plastic surgery for crooked nose is mainly divided into crooked nose type, C type and S type. Among them, the most important feature is crooked nose, also known as simple crooked nose, which is defined as the deviation of nasal cartilage, that is, the lower part of the nose, and may also be accompanied by slight nasal bone deviation. Its characteristic is that the middle and lower part of the bridge of the nose deviates to the side of the central axis, and the tip of the nose is farthest from the central axis. C-shaped, which is characterized in that the root and tip of the nose are located on the axis, and the middle part of the bridge of the nose is bent in a C-shape far from the central axis.