Nasal septal deviation and hypertrophy of the turbinates refer to the cartilaginous and bony parts of the nasal septum leaning towards one side, or both sides, of the nasal cavity, which interferes with the normal drainage function of the nasal passage. The deviation of the nasal septum to one side can cause compensatory hypertrophy of the turbinate on the same side, primarily the enlargement of the inferior turbinate. Clinically, this is mainly manifested by symptoms such as nasal congestion, nosebleeds, and headaches. Therefore, for severe nasal septal deviation, it is often necessary to perform a sinus CT scan to determine the degree of deviation, followed by endoscopic surgery to correct the deviation.