In modern rhinoplasty, the tip of the nose is not filled with any foreign body, but needs to be piled up one by one with many cartilage pieces and many suture techniques. These nasal tip plastic techniques using autologous cartilage sheets are described by western rhinoplasty masters as "easy to learn, but the results are unpredictable." In other words, it is difficult for learners to achieve the expected results even if they have read more operations, books and programs correctly. For example, if the patient's nasal septal cartilage is underdeveloped, the supporting force of the pillar used to support the nasal tip will be insufficient, and the nasal tip will not achieve the expected perfect effect. Therefore, there is another saying in the international rhinoplasty community: "Rhinoplasty is a combination of technology and art, with predictable and unpredictable parts." Therefore, whether rhinoplasty can be successfully implemented is not only related to the doctor's experience and aesthetic ability, but also has some uncertain factors.