In order to select green manure varieties suitable for improving the soil of the raw land，five different green manure varieties with strong adaptability were selected，such as Vicia villosa Roth，Vicia sativa L.，Melilotus officinalis(L.)，Fagopyrum esculentum Moench. and Brassica napus L.The change trend of soil nutrients and invertase activities in the rhizosphere and non-rhizosphere soils with different green manures and after their pressing was studied.The results showed that the root activity of different varieties of green manure crops led to differences in soil chemical properties and soil enzyme activities in the rhizosphere and non-rhizosphere soils，and the various green manures had different effects on the enrichment and activation of soil organic matter and nitrogen，phosphorus and potassium.Leguminous green manure Vicia sativa L. and Vicia villosa Roth had good activation effects on rhizosphere soil urease，and their rhizosphere effects were 3.99 and 4.41，respectively.Brassica napus L. and Vicia villosa Roth had good activation effects on the sucrase and alkaline phosphatase of rhizosphere soil.The rhizosphere effects were 13.17，13.19 and 2.84，2.87，respectively.Brassica napus L. and Vicia villosa Roth had significant effect on improving the activities of four soil enzymes after being pressed.The grey correlation analysis was used to comprehensively analyze the changes of soil nutrients and enzyme activities，and the results showed that the Vicia villosa Roth and Brassica napus L. had a better effect on the soil of the raw land improvement.