Deviated nasal septum is a common and frequently occurring condition in our department of otorhinolaryngology and head and neck surgery. It refers to the cartilage and bone of the nasal septum deviating towards one or both sides of the nasal cavities, leading to clinical symptoms such as nasal congestion, nosebleeds, and headaches. Typically, a CT scan is conducted to determine the extent of the deviation, and then, combined with clinical symptoms, surgery is performed to correct the deviated nasal septum. The surgery mainly involves removing the deviated cartilage and bone, and then repositioning the nasal septum to a central position, thus eliminating the symptoms caused by the deviated nasal septum.