Abstract:This paper has studied the regularity of translocation, distribution and accumulation of heavy metals in crop-soil system in the sewageirrigated area in the Eastern Suburbs of Beijing. The result of the experiments indicates that the mercury content in vegetables is about 3—15 times more than in crops and about 16--200 times more than in fruits. The relativity of Cu, Hg, Cd, Pb, Ni content in wheat and brown rice and in soil is not apparent. The relativity of heavy metal content in soybeans and in the soil, only Pb and Zn reached a high significant level. In the soil where Chinese cabbages were grown, the relativity of organic matter content and heavy metal content reached a significant level. However, the relativity of the content of them in the cabbages was not evident. This indicates that apart from the total content of heavy metals in the soil, the amount of their available content was the main factor which influenced the absorption and accumulation of heavy metals by the crops in this area.In most of the soils applied sludge and the crops grow in it Cd/Zn is<1%. Pot experiments have shown that the applying of local sludge and sewage had more influence on the growth of rice than the applying of sludge and then clear water. Therefore when sludge containing heavy metals is applied, the amount of it should not exceed 5000 jin per mu. The experiment in fields and pots have also proved that the amount of heavy metals transferred to plants from soil and then sent out through plants was very small. However, more mercury, cadmium and arsenic are transported than lead and chrome.