本文报告4例巨大嗅沟脑膜瘤(单侧者1例,双侧者3例)。提出早期诊断有赖临床医师对嗅沟脑膜瘤的重视,对出现一侧或双侧嗅觉减退或缺失的患者,如能排除系鼻炎所致,即应进行必要的辅助检查。本文还对单侧、双侧嗅沟脑膜瘤的手术入路、手术方法进行了较详细的讨论。 This article reports 4 cases of large olfactory groove meningioma (unilateral in 1 case, bilateral in 3 cases). Proposed early diagnosis depends on the attention of clinicians of olfactory groove meningioma, appear to one side or both sides of the sense of smell loss or absence of patients, if the Department of rhinitis can be ruled out due to the necessary auxiliary examination should be carried out. This article also unilateral and bilateral olfactory groove meningioma surgical approach, surgical methods were discussed in more detail.