For patients with mild s-shaped deviation of nasal septum and insignificant symptoms, no treatment is needed, but for patients with severe s-shaped deviation of nasal septum and obvious symptoms such as rhinitis, nosebleed, headache, etc., surgical treatment is necessary. Nasal septum deviation refers to the deviation of nasal septum to one side or both sides or localized protrusion, according to the classification of deviation pattern can be divided into S-type, C-type, crural type, talus type and so on. Its main clinical manifestations are nasal congestion, nosebleed, headache and other symptoms, and can induce sinusitis, tinnitus and other symptoms of neighboring organs. For patients with lesser degree of septal deviation or less obvious symptoms, no treatment can be carried out. When deviated nasal septum presents obvious symptoms such as nasal congestion, headache, nosebleed or sinusitis; when allergic rhinitis and vasomotor rhinitis with deviated nasal septum are ineffective in conservative treatment; or when deviated septum affects the surgical operation and postoperative effect in endonasal sinus surgery; it can be surgically treated by submucosal correction of septum, submucosal resection of septum, and so on. Patients with deviated septum are recommended to visit hospitals and be treated under the guidance of specialized doctors.