Soil heavy metal pollution in China is serious, threatening people ' s health and causing huge economic losses. The commonly used remediation technologies for heavy metal contaminated soil are based on physical, chemical and biological methods and their combination. This paper introduces the forms and sources of heavy metals in soil and the mechanism, influencing factors, advantages and disadvantages of commonly used remediation technologies, and compares the applicability of commonly used remediation technologies from three aspects : remediation cost, remediation time and long-term effect, so as to provide some reference for scholars in this field to develop remediation schemes for heavy metal contaminated soil.