Abstract: Forty seven quadrats were surveyed in a saline meadow land of Hexi Corridor. The samples were analyzed using DCA ordination procedure to determine the distr bution patterns of the plant communities. Five quadrat groups were separated after DCA ordination. The vegetation distribution patterns were explained by soil environmental parameters including organic matter content, total salt content, pH and underground water depth. The results indicated that soil salt content and moisture were closely related to the under ground water depth in arid-saline area.