The　present　study　proposes　to　improve　the　performance　of　recycled　aggregate　concrete　(RAC)　subjected　to　the　internal　steel　corrosion　by　conducting　the　pre-treatment　on　recycled　aggregate　(RA).　A　sulfoaluminate　cement　(SAC)　slurry　and　a　diluted　water　glass　(WG)　solution　were　taken　for　the　RA　pre-treatment,　respectively.　Test　results　show　that　the　RAC　as　modified　by　both　the　two　RA　treatments　presented　a　better　resistance　to　the　steel　corrosion　as　accelerated　by　the　chloride　ingress　and　the　direct　current　(DC)　power　simutaneously.　The　corrosion　of　steel　bars　embedded　in　the　modified　RAC　was　found　to　be　postponed,　moreover,　the　width　development　of　the　cracks　induced　by　the　steel　corrosion　on　the　concrete　surface　was　retarded,　compared　to　the　reference　RAC.　Microscopic　measurements　showed　that　the　microhardness　of　the　new　ITZ　formed　between　the　new　cement　mortar　and　the　treated　RA　by　both　two　techniques　was　improved,　moreover,　the　new　ITZ　presented　a　sandwich-like　structure　by　using　the　SAC-treated　RA.　Likely　due　to　the　more　significant　enhancement　in　the　new　ITZ,　the　improvement　in　RAC＇s　resistance　to　the　internal　steel　corrosion　was　more　significant　with　the　SAC　treatment　than　with　the　WG　treatment.　Also　considering　the　potential　risk　of　a　large　early-age　shrinkage　caused　by　the　high　alkaline　content　introduced　by　the　WG　treatment,　to　pre-treat　RA　with　the　SAC　slurry　was　suggested　to　be　more　beneficial　than　that　with　the　WG　solution　to　extend　the　service　life　of　the　reinforced　RAC　structures　serving　in　severe　environments　with　high　risks　of　steel　bar　corrosion.