Electrokinetic soil remediation (EKR) is a promising in-situ technique that could be suitable for the removal of high salt ions content from soil. However, the presence of carbonate ions and calcite in saline soil presents additional challenges for this remediation approach. This study investigates the efficacy of EKR on a real calcareous and highly saline soil by following the removal efficiency of key salt ions (6 anions: NO2-, NO3-, HCO3-, CO32-, Cl-, SO42-, and 4 cations: Na+, K+, Mg2+, Ca2+). The focus is on optimizing carbonate ion decomposition to enhance soil decontamination. Four experiments were conducted under varying conditions, including constant and cycled DC voltage applications. The results showed that experiment 3, which involved pre-EKR neutralization of soil carbonates ions and controlled pH levels of the anolyte and catholyte, achieved the highest removal efficiency for ions, including over 60 % of carbonate ions. Additionally, this treatment reduced soil electrical conductivity from 18.56 dS/m to 1.89 dS/m. The cycled voltage application in experiment 4 demonstrated a slight reduction in energy consumption while maintaining ion removal efficiency. These results highlight the importance of managing carbonate ion concentrations and pH levels to enhance the efficiency of EKR in calcareous highly saline soil remediation.