We always come across cases of secondary nose collapse, emphasizing the low flatness or even depression of the nasal dorsum above the nasal tip, which usually affects the position of the nasal cartilage, by which the nasal tip rotates to the head side, commonly speaking, the nostrils become more skyward, and there are basically two reasons for this. First, surgical reasons, various factors lead to surgery of nasal septum, like deviation of nasal septum, abscess of nasal septum, etc. The septum is the root of the nasal dorsum and nasal wing support, just like the foundation of a house is unstable and soft, the extension of time will lead to the gradual sinking of the nasal dorsum, and some people have performance immediately after surgery. Second, trauma, strong external force will damage the scaffolding of the nasal dorsum, the first to affect the hard tissue structures such as the nasal bone, so such people mostly have deformities such as overly wide nasal dorsum. Cartilage damage is usually a delayed effect, with impaired growth, deviation and low flatness or even depression after some time. The goals and results of the surgical treatment are clear, restoring the supporting structures and reshaping the good shape. Attached is a typical pre- and post-surgical case from my clinic.