Pot experiments were conducted to investigate the effects of co-application of molybdenum (Mo) and selenium (Se) on the yield,the uptaking of Mo and Se,and the quality of Chinese cabbage.The results showed that co-application of Mo and Se could increase the yield of Chinese cabbage.The concentrations and accumulations of Mo and Se,contents of Vc,contents of soluble sugar and soluble protein of Chinese cabbage were increased.But the content of nitrate of Chinese cabbage was decreased.The interaction between Mo and Se had a significant influence on the uptaking of nutrition and the quality of Chinese cabbage.Co-application of them was useful for producing Mo-riched and Se-riched Chinese cabbage.