报告2例鼻内窥镜下经鼻手术治疗先天性后鼻孔闭锁。结果表明鼻内窥镜检查结合轴位CT扫描是诊断本病的理想方法。认为鼻内窥镜下经鼻手术具有视野清晰、操作准确、切除闭锁组织彻底、鼻咽侧粘膜易于完整保留和利用、手术损伤小、出血少及成功率高等优点，并指出术后定期鼻内窥镜检查可及时去除创面肉芽和粘连，以保持后鼻孔通畅，是保证手术成功的重要一环。 Report of 2 cases of nasal endoscopic nasal surgery for the treatment of congenital nostril atresia. The results show that nasal endoscopy combined with axial CT scan is the ideal method of diagnosis of the disease. It is concluded that transnasal surgery under nasal endoscopy has the advantages of clear field of vision, accurate operation, complete removal of atresia and complete preservation and utilization of nasopharyngeal mucosa, less operation injury, less bleeding and high success rate. It is pointed out that postoperative intranasal Endoscopy can remove wound granulation and adhesions in time to keep the posterior nostrils open, which is an important part of the successful operation.