Abstract:Remediation of heavy metal contaminated soil is a long-term and arduous task. At present, soil heavy metal pollution remediation technology is mainly divided into physical remediation, chemical remediation and bioremediation. As a kind of chemical repair, passivation technology is widely used because of its low cost, high efficiency and time saving. This paper summarizes the types of passivation remediation from five aspects : calcareous materials, phosphorus-containing materials, clay minerals, biochar and other materials, and introduces the mechanism of passivation remediation. Finally, it analyzes the influencing factors of passivation remediation of heavy metals in soil-the dosage of passivation agent, pH value and the stability of passivation agent. Based on current research status and problems of passivation repair, the future development trend of passivation repair was prospected.