Abstract:Solidification/stabilization technology (SST) has been widely used to remediate the heavy-metal contaminated soils due to its economy, effectiveness and quickness. With the promotion of risk-based soil management and controlling policy in China, SST is becoming more and more important nowadays in soil remediation. Heavy metals are not removed from the contaminated soils after the treatment of SST, and there is still a risk of reactivation. In this paper, the characteristics of SST, the evaluation method on remediation effects, and the index of performance criteria were systematically summarized at first, and then the speciation, bioavailability and micromorphology of heavy metals were described after SST remediation. Furthermore, three typical environmental stresses, including freeze-thaw, water environment factors and acid rain leaching, were highlighted to discuss the activation behavior of heavy metals and the influencing factors. After that, the current management system, deficiency supervision and demand for the soil after remediation were discussed, and more attentions should be paid to the research of heavy metal environmental behavior and the quantitative prediction of reactivation.