Abstract: Objective To investigate the drug resistance of Mycobacterium tuberculosis to streptomycin,capreomycin and amikacin and to provide the scientific evidences for clinical treatment.Methods A retrospective study was adopted to analyze the results of drug susceptibility testing(DST)in 448 inpatients with pulmonary tuberculosis confirmed by culture with BACTEC MGIT 960 in our hospital during August 2008 to July 2009.Results Of 189 streptomycin-resistant isolates,59(31.2%)strains were resistant to ami...