肺结核化疗失败的患者常存在病灶反复恶化,长期排菌的情况,这不仅危及病人的健康,且能成为社会性传染源,因此为目前临床研究的主要问题之一。为此本文对其失败原因进行了分析,以求对合理化疗有所俾益。资料来源及临床分析根据1978年中央卫生部颁发的肺结核病五型分类法、初复治标准及疗效的考核方 The failure of chemotherapy in patients with pulmonary tuberculosis often exist repeated deterioration of the lesions, long-term bacteriostasis, which not only endanger the patient’s health, and can become a source of social transmission, and therefore one of the major clinical research problems. Therefore, this paper analyzes the causes of failure in order to benefit the rational chemotherapy. Data Sources and Clinical Analysis According to the classification of pulmonary tuberculosis type-five classification issued by the Central Ministry of Health in 1978, the standard of initial re-treatment and the assessment of curative effect