Abstract: Object To study relationship of asthma and pulmonary tuberculosis. Methods Asthma epidemiological survey in Henan province was done togethen with tuberculosis survery. Result Asthma prevalence was 2.3% in pulmonary tuberculosis patients and 1.0% in Non-pulmonary tuberculosis patients.The asthma prevalence in pulmonary tuberculosis patients was two times than that of Non-pulmonary tuberculosis.The pulmonary tuberculosis prevalence was 1.2% in asthma and 0.5% in Non-asthma patients. The pulmonary tubdrculosis prevalence in asthma was two times more also than one in Non-asthma. Conclusion The pulmonary tuberculosis can be easily complicated by asthma, and asthma can also be complicated by pulmonary tuberculosis. These two are mutual inducing factors.

Key words: Asthma, Tuberculosis,pulmonary