In order to study diosgenin to the soil mierobe and enzyme activity, the effect of diosgenin on enzyme activities in soil and microbial populations was investigated in a microcosm mimicking soil ecosystem. The results showed that, the diosgenin to the catalase activity had the varying stimulation degree, to the sucrase activity were inhibited action, and the inhibitory action, recovered function was slow, at low concentrations (40 mg/kg) diosgenin processing to the bacteria, fungi and actinomycetes had the different stimulation. But high conc...