Phytoremediation technology is in line with the development trend of heavy metal contaminated soil remediation technology due to its advantages，such as safety，environmental friendliness，low cost and simple operation.Therefore，it has broad application prospect and huge development potential.Whereas，some disadvantages( longer repair cycle， insufficient super-enriched plant biomass，lower remediation efficiency，limited repair area) prevent it from being applied on a large scale.Hence，how to enhance the effect of phytoremediation has become a hot issue in soil remediation. Chelating agents have the ability to significantly increase the content of available heavy metals in soil and improve their migration and transformation capacity.The application of nutrient elements is beneficial to the growth of plants under heavy metal stress. In this article，we first summarized the ways and effects of chelating agents and nutrient elements( N，P，K) in strengthening phytoremediation.Then we analyzed the internal strengthening mechanisms and influencing factors as well as the shortcomings of phytoremediation strengthening techniques.Fin lly we prospected the feasibility of chelating agents combined with nutrient elements to enhance phytoremediation.