The wetland in Chongming Dongtan is an important stopover site for migratory shorebirds along the East Asian-Australasian Flyway. The high abundance macrobenthos in Chongming Dongtan allow migratory birds to refuel during stopover. This study analyzed the distribution and density of macrobenthos in the intertidal zone. Results showed that the macrobenthos are mainly consisted of gastropods, bivalves, polychaetes, crustaceans and insect larvae. The density of gastropods ((2805±360)ind./m²) was the highest, accounting for up to 80% of the total macrobenthos density. Meanwhile, bivalves ((51.4±7.8)g/m²) and gastropods ((38.7±5.1)g/m²) together accounted for more than 90% of the total biomass. On the other hand, there were significant differences in the distribution of macrobenthos among different intertidal zones. Gastropods were confined mainly to the sea-bulrush zones, while bivalves were confined mainly to the outer sea-bulrush zone and the sandy flat. In term of the spatial distribution in density, the gastropod density was high in the north but low in the south. However, no significant difference was found in the density of macrobenthos groups between spring and autumn, except the density of bivalves in autumn was significantly higher than that in spring (P<0.001).