Abstract: Lycium Chinese is not only an important economic species used for saline-alkali soil,but also an important ecology species. It has strong functions for improving soil and conserving soil and water. It can yield good social and economic benefits.Through analysis on benefits of planting Lycium chinese in saline-alkali soil,the results showed that after Lycium chinese being planted 3 years,the soil at the depth of 0～40cm from surface downward respectively is desalinated by 77.97%, 69.19% and 44.98%. And CI^-、SO₄^2-、Na⁺+K⁺ obviously declined.Lycium Chinese is one of traditional farming pillar industries of Hetao plain and the net income per hectare is approximately between 35898.7 and 43110.7 Yuan.At the same time,it plays an important role in readjustment of rural business structure and promotion of rural economic development.

Key words: saline-alkali soil, Lycium Chinese, benefit analysis, Hetao irrigation area