目的：评价ＭＲＩ对原发性椎管内肿瘤的诊断价值。材料和方法：对６３例原发性椎管内肿瘤进行ＭＲＩ扫描，并与手术病理和临床随访结果对照分析。结果：检出神经纤维瘤及神经鞘瘤２７例，脊膜瘤１１例，髓内胶质瘤１４例，蛛网膜囊肿６例，皮样囊肿２例，淋巴瘤２例，脂肪瘤１例。与ＣＴ和脊髓造影等检查相比，ＭＲＩ对本病的检出率和诊断正确率明显提高。结论：ＭＲＩ是发现原发性椎管内肿瘤的首选方法，对本病的诊断与鉴别诊断具有重要价值。 Objective: To evaluate the value of MRI in the diagnosis of primary spinal tumors. MATERIALS AND METHODS: Sixty-three primary tumors of the spinal canal were scanned by MRI and compared with the surgical pathology and clinical follow-up results. Results: 27 cases of neurofibromatosis and schwannoma were detected, 11 cases of meningiomas, 14 cases of intramedullary gliomas, 6 cases of arachnoid cysts, 2 cases of dermoid cysts, 2 cases of lymphoma and 1 case of lipoma. Compared with CT and myelography and other tests, MRI detection rate of the disease and the diagnostic accuracy was significantly improved. Conclusion: MRI is the first choice to find the primary tumor of the spinal canal, which is of great value in the diagnosis and differential diagnosis of this disease.