目的：对比研究脑肿瘤患者三维脑电地形图（３Ｄ）和二维脑电地形图（２Ｄ）的变化及临床应用价值。方法：以ＣＴ、ＭＲＩ结果对照，对２４例脑肿瘤患者进行３Ｄ、２Ｄ和常规ＥＥＧ对比分析。结果：与影像学检查一致、基本一致和不一致者：３Ｄ分别为１４、５和５例，２Ｄ为５、１３和６例，ＥＥＧ为９、９和６例。结论：３Ｄ和ＥＥＧ检查结果与影像学一致率高于２Ｄ。２Ｄ的根本缺陷是采用平面圆代表立体的大脑，不能准确显示病变与范围 Objective: To compare the changes and clinical value of three-dimensional electroencephalography (3-D) and two-dimensional electroencephalography (2-D) in patients with brain tumors. Methods: CT, MRI results of control, 24 cases of brain tumor patients 3 D, 2 D and conventional EEG comparative analysis. Results: Consistent with the imaging examination, consistent and inconsistent: 3 D were 14,5 and 5 cases, 2 D 5,13 and 6 cases, EEG 9,9 and 6 cases. Conclusion: 3  D and EEG examination results and imaging consistent rate higher than 2  D. 2  D’s fundamental flaw is the use of flat circular representation of three-dimensional brain, can not accurately display the lesions and scope