K-B paper dispersion method was used to research the inhibition effect of Cumin's extracts on bacteria. The inhibition effect of circular filter paper pieces of Cumin's extracts on 8 tested strains was observed. It had different effects of growth inhibition on bacteria. Most of the MIC of cumin oil were 1%-2% to 8 tested strains. Most of the MIC of ethanol extract was 100 mg/mL to 8 tested strains.