In order to study the relationship between spatial heterogeneities and distribution of plant community, the soil moisture,salt,organic carbon, total nitrogen and total phosphorus were investigated in the Changyi Marine Ecological Special Protection Area in September,2009.The results show that,the water content closely related with dissolved salt content and organic carbon with high coefficiencies(p<0.01).Meanwhile, the organic carbon significantly corelated with total nitrogen(p<0.05), but not with the total phosphorus.The soil water content and salt content increased from the land to the sea, while the organic carbon, vegetation composition and coverage decreased at the same time. Moving seaward, the species abundance and diversity of plant decreased, evolving from diversified shrubs and herbs dominated by Setaria viridis to predominantly salt-tolerant community of Tamarix chinensis Lour.,Suaeda glauca, and then to mono-species of Suaeda salsa(L.)Pall.