Seventy-two strains of Pseudomonas aeruginosa isolated from the patients were tested for pigment production, exoenzyme production and antimicrobial susceptibility. In the pigment production test, 23.6% of total 72 strains produced both pyocyanine and pyoverdin. Pyoverdin and pyomelanin producing strains were in 9.7%, and 5.5% produced pyoverdin and pyorubin. Strains producing of all of exoenzyme, protease, elastase and lecithinase were in 5.6%. The most common type of exoenzyme production was both protease and elastase producing. Protease producing strain were 23.6%, Among the 72 strains, 50% produced protease. As the result of antimicrobial susceptibility in the isolated 20 strain, most strain were resistant to sulfamethoxazole(90%), but sensitive to other tested antibiotics more than 60%. The MIC50 and MIC90 level of tested antibiotics to 70 strains were 128 $mu extrm{g}$/$mell$, 512 $mu extrm{g}$/$mell$ for KM, 8,256 $mu extrm{g}$/$mell$ for GM, 8, 128 $mu extrm{g}$/$mell$ for CPZ, and 8, 64 $mu extrm{g}$/$mell$ for PIPC respectively