Objective To establish a method for the determination of the antifungal component produced by Streptomyces NG-715.Methods The antifungal component was used as the reference component for UV spectrophotometry detemined at 339 nm. Results By spectrophotometry,a good linearity was established within 8μg/mL~20 μg/mL,and the average recovery rate was 99.98%(n=6 )with RSD being 0.1 1%.Conclusion The method is simple,rapid,accurate with good reproducibility for determining the antifungal component produced by Streptomyces NG-715.