Abstract: Heavy metals discharged into the environment by natural and human activities may have harmful consequences on human health, ecological environment, economy and society, so the remediation of the soil contaminated with heavy metal has attracted much attention in recent years. Among several techniques for remediation of heavy metal-contaminated soil (physical remediation, chemical remediation and biological remediation), the metal stabilization technology using soil improvers has received considerable attention and is a promising method for soil remediation. In this paper, the research progress of soil improvers in remediation of heavy metal-contaminated soil in recent years was reviewed, including inorganic materials such as clay minerals, phosphorus-containing materials, metals and metal oxides, organic materials such as organic matter, municipal solid waste and biochar, and some combined application of organic and inorganic materials in remediation of heavy metal- contaminated soil. These improvers effectively reduce the bioavailability of heavy metals in soil through various repair processes such as adsorption, complexation, precipitation and REDOX. Finally, the prospect of future research is put forward, and the basic theoretical research should be strengthened to clarify the chemical stabilization process and heavy metal repair mechanism, so as to broaden the development of this field. It provides a valuable reference for the study and practice of the stability of heavy metals in polluted soil.