This　study　aimed　to　evaluate　the　in-situ　remediation　performance　of　Cr/Ni　contaminated　soil　by　the　electrokinetic　(EK)　and　the　Electrochemical　Geooxidation　(ECGO)　processes.　The　standard　operating　procedures,　including　Phase　I-III　(pre-engineering,　remediation,　and　site　restoration),　in　an　in-situ　EK/ECGO　system　were　established.　The　effects　of　electrode　configuration　(Honeycomb　and　Square),　potential　gradient,　and　processing　fluid　on　remediation　performance　were　investigated.　Results　showed　that　the　removal　efficiencies　of　Ni　and　Cr　were　27.3–39.3%　and　6.1–30.1%　in　the　honeycomb　system,　respectively,　and　were　46.2–48.5%　and　3.1–12.2%　in　the　square　system,　respectively.　In　particular,　using　the　Fe/Al　oxidation　electrode　hugely　shifted　the　soil-metal　bonds　from　stable　to　a　less　stable.　Results　showed　that　the　cost　of　Phase　II　varied　under　different　experimental　conditions.　In　contrast,　the　cost　of　Phase　I　and　III　was　independent　experimental　parameters.　Cr　and　Ni　removal　cost　was　0.34–1.01　USD　g-1　and　0.23–0.36　USD　g-1　in　the　honeycomb　system,　respectively,　and　was　1.41–5.58　USD　g-1　and　0.50–0.71　USD　g-1　in　the　square　system,　respectively.　In　terms　of　remediation　efficiency　and　cost　analysis,　this　study　demonstrated　that　the　overall　performance　in　the　honeycomb　system　was　better　than　that　in　the　square　system.　©　2021　Elsevier　Ltd