目的:为避免界内窥镜筛窦切除术颅内及眶内等严重并发症发生.方法:用60具头颅标本进行了有关鼻内窥镜筛窦切除术应用解剖研究.以前鼻棘为基点,对8个解剖标志进行测量.结果:前鼻棘至泪囊距离为45mm,角度58度;至钧突47mm;至基板43mm;至筛前动脉63mm,角度55度;至筛后动脉70mm,40度;至视神经管74mm,34度.结论:认为术前熟悉内窥镜下筛窦解剖,掌握有关解剖数据,术中认清手术标志,是减少并发症的关键. Objective: To avoid the endoscopic ethmoid sinus resection intracranial and intraorbital serious complications.Methods: 60 skull specimens were used for endoscopic sinus ethmoidectomy anatomical study of the former base of the nasal spine , The results of 8 anatomical landmarks were measured.Results: The distance from the anterior nasal spine to the lacrimal sac was 45mm, the angle was 58 degrees, the diameter was 47mm, the diameter was 43mm, the diameter of the anterior ethmoid artery was 63mm, the angle was 55 degrees, 40 degrees to the optic canal 74mm, 34 degrees.Conclusion: Preoperative familiar with endoscopic ethmoid sinus anatomy, to master the relevant anatomical data, surgery clear surgical signs, is the key to reducing complications.