Deviated nasal septum is a common condition causing nasal obstruction in patients, mostly due to untreated congenital development and trauma to the nose. The main symptom is unilateral or bilateral nasal obstruction. This disease is usually treated by “nasal endoscopic submucosal resection of the nasal septum”, which can correct the curved septum and enlarge the ventilation channels of the nasal cavity bilaterally. It is a simple procedure that can be mastered by general practitioners. Cost: less than 3,000 RMB at the central hospital.