Abstract: Objective To probe into the influence of drug taking on the seriousness of pulmonary tuberculosis.Methods To compare the chest X-ray,sputum examination and clinical symtoms before and after treatments between drug taking group and non-drug taking group.Results There were significantly increased the severity of clinical symtoms,the sputum positive rate,rate of cavitation and the scope of pathological changes were significantly increased comparing with control groups before treatment.The improvement of clinical symtoms,the sputum negative convertion rate,scope of pathological improvement,cavity reduce rate were signigicantly decreased after treatment.The differece between the two groups was significant.Conclusion Drug taking may aggravate the severity of pulmonary tuberculosis.

Key words: Drug taking, Tuberculosis,pulmonary