目的　分析非典型脑膜瘤的影像学表现。方法　 17例均经病理证实 ,男 7例 ,女 10例 ,年龄 3 4～ 69岁。 17例均行CT检查 ,其中 10例强化。 12例行MR检查 ,其中 8例强化。 5例行DSA检查。结果　非典型性脑膜瘤主要影像特点 :边缘多不规则 ;CT与MR平扫分呈不均匀密度及信号 ,注入造影剂后呈不均匀强化。可见囊变坏死及颅骨和临近结构破坏与侵犯。 5例MRI可见硬膜尾征 ,“尾征”表现为短、粗、不规则。 5例DSA检查为较明显的浓染。结论　非典型性脑膜瘤具有一定的影像学特征 ,可做出明确术前诊断或诊断意向。 Objective To analyze the imaging findings of atypical meningioma. Methods 17 cases were confirmed by pathology, 7 males and 10 females, aged 34 ~ 69 years. 17 cases underwent CT examination, of which 10 cases strengthened. 12 cases underwent MR examination, of which 8 cases were intensified. 5 routine DSA examination. Results The main imaging features of atypical meningioma were as follows: the edges were irregular and the CT and MR scan showed uneven density and signal, which was unevenly enhanced after injection of contrast agent. Visible cyst necrosis and the destruction of the skull and adjacent structures and violations. 5 cases of MRI showed dural tail sign, “tail sign” showed short, thick, irregular. 5 cases of DSA examination for the more obvious staining. Conclusions Atypical meningiomas have certain imaging features and can make a clear preoperative diagnosis or diagnosis intention.