Abstract: The PVC industry is the most important field for the implementation of the mercury (Hg) convention in China. The potential number and risk of Hg contaminated plots caused by the transformation of production, upgrading and withdrawal of related industries is huge. So it is necessary to carry out the relevant remediation technology reserve and engineering application practice in advance. Based on the investigation for the characteristics of PVC industry in China, the ways and risk characteristics of Hg pollution caused by production process were summarized. The remediation technologies of Hg contaminated land at home and abroad were summarized. The common remediation technologies of Hg contaminated soil included solidification stabilization, thermal desorption and soil leaching. The Hg contaminated groundwater technologies included extraction treatment, in-situ stabilization and PRB. From the aspects of pollution source control, pollution diffusion barrier, contaminated soil and groundwater remediation and so on, the remediation technology screening index was selected, and the multi-level standard of remediation technology screening was constructed, in order to provide a technical reference for environmental assessment, remediation and prevention of Hg contaminated plots in PVC industry.