Abstract:In order to explore the effects of different concentrations of vanadium on the content of phenolic compounds and antioxidant activity in germinated black beans，the changes of total phenols and flavonoids in germinated black beans treated with vanadium were studied by hydroponics，as well as the antioxidant activity and antioxidant enzyme activity of germinated black beans.The results showed that the highest germination rate was（77.33±2.49）%，and the bud length was（10.12±0.23）cm when the vanadium concentration was 50 mg/L.With the increase in vanadium concentration，the content of total phenols and flavonoids increased first and then decreased.When the vanadium concentration was 50 mg/L and 100 mg/L，the total phenol content of germinated black beans significantly increased compared to the control group（p<0.05），and the total flavonoid content reached the highest value of 50 mg/L and then showed a downward trend.At the same time，the antioxidant activity of germinated black beans increased to some extent，and the trend was basically consistent with the changes of total phenol and flavonoid content；the antioxidant enzyme activity also increased to some extent.