目的　评估影响小脑幕及窦汇区脑膜瘤显微手术全切除的因素。　方法　回顾分析经显微手术治疗的小脑幕及窦汇区脑膜瘤 2 3例的临床资料及复述相关文献。　结果　手术全切除肿瘤 17例 ,次全切除 6例。在次全切除的 6例中 ,4例与颅内大静脉窦受肿瘤侵蚀 ,且存在静脉回流代偿不完全有关 ,2例同脑干、血管及脑神经与肿瘤粘连紧密或受肿瘤侵犯有关。　结论　影响小脑幕及窦汇区脑膜瘤显微外科手术全切除的主要因素是颅内大静脉窦受侵犯及静脉的回流代偿不完全、肿瘤与脑干和脑神经的紧密粘连 Objective To evaluate the factors influencing the total excision of cerebellar and sinus meningiomas under microsurgery. Methods Retrospective analysis of microsurgical treatment of cerebellum and sinus area meningioma in 23 cases of clinical data and re-related literature. Results The total resection of the tumor in 17 cases, subtotal resection in 6 cases. Of the 6 subtotal resections, 4 were associated with tumor erosions of the intracranial large sinus and incomplete venous return compensation, and 2 were associated with tumor adherence to the brain stem, blood vessels and cranial nerves . Conclusions The main factors affecting microsurgical resection of the cerebellar and sinus meningioma in microsurgery are incomplete invasion of the intracranial major venous sinus and recurrent venous insufficiency, intimate adhesion between the tumor and the brainstem and the cranial nerves