Ｘ线平片与体层摄影对中心型肺癌的诊断有着重要的作用，本文通过１００例中心型肺癌的临床、病理、胸部正侧位平片、支气管体层摄影进行对照分析，胸部正侧位平片对中心型肺癌诊断准确率的７５％，支气管体层摄影为９２％。同时探讨了胸部正侧位片、体层摄影的误诊原因及支气管体层摄影在诊断中心型肺癌中的临床运用 X-ray film and tomography play an important role in the diagnosis of central lung cancer. In this paper, the clinical, pathological, chest plain radiograph and bronchial tomography of 100 patients with central lung cancer were compared and analyzed. The diagnostic accuracy of plain film for central lung cancer was 75%, and for bronchiocardium was 92%. At the same time, the reasons for the misdiagnosis of chest lateral radiographs and tomography and the clinical application of bronchial tomography in the diagnosis of central lung cancer were discussed.