The spatial variability of soil salt content (SC), electrical conductivity (EC), pH and sodium adsorption ratio (SAR) was analyzed by using traditional statistics and geo-statistics in a typical degraded wetland of saline sodic soils. The results indicated that SC, EC and pH were strong, while SAR was weak, spatial autocorrelation resulting from compound impact of structural and stochastic factors．Kriging interpolation showed that the spatial distribution of SC, EC and pH was similar. There was a significantly negtive correlation between EC and plant height, coverage and dry biomass of Phragmites Australis. It indicated that the soil EC was the most important factor affecting the growth of Phragmites Australis in saline-sodic land. When pH＞10.1, EC＞0.4 mS cm-1 and SC＞4604 mg kg-1，the vegetation community was successed from Phragmites Australis to Puccinellia distans +Phragmites Australis, and the Phragmites Australis plants was decreased with the increase of soil salinity and sodicity. These results may serve for the restoration and utilization of saline-sodic land．