The greatest advantage of costal cartilage is its abundant materials. Some people are born with a short nose and a weak nasal septum, so it is not ideal to simply use ear cartilage as the tip of the nose. At this time, costal cartilage is the most ideal material for nasal tip cartilage scaffold. Therefore, for girls with short alar and fleshy alar, it is the most ideal scheme to lengthen, raise and narrow the nose by using costal cartilage. At the same time, costal cartilage can also perform many functions, such as shaping the tip of the nose, raising the bridge of the nose, filling the root of the alar, and creating double C lines.