目的：探讨在鼻内窥镜下切除侵犯颅底的巨大鼻窦囊肿的可行性．方法：对３例侵犯颅底的巨大鼻窦囊肿采用算内窥镜下手术的回顾性分析及文献复习．结果：３例手术获得成功，临床症状消失，无并发症，随访１～４均无复发．结论：算内窥镜下切除侵犯颅底巨大鼻窦囊肿是一个安全有效的术式，并且创伤小、恢复快、并发症少． Objective: To explore the feasibility of removing huge sinus cysts infringing skull base under nasal endoscopy. Methods: The retrospective analysis and literature review of 3 cases of giant sinus cysts infiltrating the base of the skull were performed under endoscopic surgery. Results: Three cases were successful in operation, clinical symptoms disappeared and no complications were found. No recurrence was observed in 1 to 4 cases. Conclusions: It is a safe and effective surgical procedure to remove the giant sinus cyst in the skull base by endoscopic resection, and it is less traumatic, quicker recovery and less complication.