Abstract:contaminated soil. The effects of electrolytes such as disodium ethylenediamine tetraacetic acid (ED⁃TA), citric acid and citric acid + calcium chloride on the removal of Pb and Cd were investigated. Themigration mechanism of Pb and Cd under different electrolyte conditions was explored. The resultsshowed that the removals(%) of Pb were 14.70%, 11.6% and 17.01%, the removals(%) of Cd were22.84%, 15.08% and 23.3%, and the power consumption was 29.3, 37.8, and 50.3(kW·h)/g, re⁃spectively, with a voltage gradient of 2 V/cm, a remediation time of 96 h and electrolytes of EDTA,citric acid and citric acid + calcium chloride. Combined with the distribution of Pb and Cd in the reme⁃diated soil and the simulation results, it was indicated that EDTA migrated to the anode by complexingwith Pb2+and Cd2+into PbEDTA2-and CdEDTA2-. While acidifying the soil, citric acid complexedwith Pb2+and Cd2+into PbH2-Citrate+, CdH2-Citrate+, Pb-(Citrate)4-2and Cd-(Citrate)4-2,migrated to both poles and focused in the middle of the soil. Under the action of citric acid, Cl-in cal⁃365cium chloride formed complexes PbCl+and CdCl+with Pb2+and Cd2+, further promoting desorption andimproving the removal of Pb2+and Cd2+. Close-