目的　探讨鼻咽癌放疗后至后放射性后鼻孔闭锁的治疗。方法　对鼻咽癌放疗后至后鼻孔闭锁 38例手术治疗 ,其中腭间径路后致后鼻孔成形 8例 ,鼻内窥镜下微波治疗 30例。结果　腭间径路组术后 2例鼻腔粘连再狭窄 ,经再次手术治愈 ,余 36例一次性治愈。结论　鼻内窥镜外科后鼻孔成形术 ,术式简单 ,术野清晰 ,创伤小 ,是治疗鼻咽癌放射性后鼻孔闭锁的较好方法 Objective To investigate the treatment of nasopharyngeal atresia after radiotherapy of nasopharyngeal carcinoma. Methods Thirty-eight cases of nasopharyngeal atresia after radiotherapy were treated by nasopharyngeal approach, including 8 cases of nasal reconstruction after palatal approach and 30 cases of microwave treatment under nasal endoscopy. Results In palatal group, 2 cases of restenosis of nasal adhesions were cured, and again treated by surgery, 36 cases were cured at one time. Conclusion Nasal endoscopic sinus surgery after surgery, simple surgical procedures, clear surgical field, small trauma, nasopharyngeal cancer is a good method for the treatment of radioactive nostril atresia