The effects of nitrogen，phosphorus，potassium，calcium，magnesium and sulfur deficiencies on the morphology，growth and nutrient uptake of Chinese milk vetch seedlings were studied with solution culture. The results indicated that insufficient nutrient supply inhibited the growth of Chinese milk vetch seedlings in different degrees，showing special symptoms of different nutrients deficiencies.Except potassium and sulfur，other nutrients deficiencies significantly reduced the plant height by 16.4% ～ 54.0%.Nitrogen and calcium deficiencies significantly reduced the root length by 31.9% and 22.5%，respectively，but other nutrients deficiencies had no significant effect on root length.The shoot dry weight of Chinese milk vetch was significantly reduced by 22.0% ～ 60.7% due to the nutrients deficiencies except sulfur. Root dry weight significantly decreased by 23.4%～51.6% due to nitrogen，calcium and mganesium deficiencies and increased by 40.6% and 18.8% with phosphorus and sulfur deficiencies，respectively，while potassium deficiency had no significant effect on root dry weight.The dynamic change of biomass of the whole plant with nutrient deficiencies was similar to that of the shoot，and the root-shoot ratio increased significantly due to nutrients deficiencies except magnsium. The chlorophyll contents of Chinese milk vetch seedlings significantly decreased under nitrogen，calcium，magnesium and sulfur deficiencies，but not under potassium and phosphorus deficiencies.The concentrations of nitrogen and potassium in the shoot of Chinese milk vetch seedlings significantly decreased except for the nitrogen concentrations under potassium and sulfur deficiencies and the potassium concentrations under phosphorus and magnesium deficiencies.The concentration of phosphorus in Chinese mulk vetch seedlings decreased only under phosphorus deficiency.Generally，these 6 mineral nutrients deficiencies resulted in significant decrease in the accumulations of nitrogen，phosphorus and potassium in Chinese milk vetch.Cluster analysis showed that calcium and nitrogen deficiencies caused the most serious damage to Chinese milk vetch seedlings under hydroponic conditions，followed by phosphorus and potassium，while magnesium and sulfur stress were relatively mild.Given.the above，mineral element deficiency inhibited the growth and nutrients accumulation of Chinese milk vetch，fertilization.should.be recommended.according to its demand for improving production and utilization efficiency of green manure.