Removal of Fe3+in acidic leaching solution of fly ash was studied using ion-exchange resins.Three kinds of ion-exchange resins have different adsorption capacity for Fe3+in the acidic leaching solution of fly ash.The results show that using D201strong basic anion exchange resin to adsorb Fe3+,using sodium thiosulfate as reducer and EDTA as complexing agent,Fe3+mass concentration in leaching solution can be reduced to lower 0.5g/L.