The suitability of site of Jiangdu Landfill related to its geographical environment and geological background is discussed in this paper.the problems existed in the processing and management of the landfill and their effects to environment are pointed out.The solid constitutes and chemical composition of waste

and contamination produced during filling status and its mechanism are elaborated.The contaminating status of surface and phreatic water is discussed in some details surrounding the landfill.It is concluded that the phreatic water is seriously contaminated by heavy metals of As、Hg、Cd、Pb、Cr.