The　corrosion　rate　and　electric　flux　of　reinforced　concrete　with　supplementary　cementitious　materials　(fly　ash　and　slag)　subjected　to　sulfate　corrosion　and　a　fatigue　loading　environment　were　studied.　The　specimens　under　a　sulfate　corrosive　environment　were　analyzed　and　the　relationship　between　the　corrosion　rate　of　steel　bar　and　electric　flux　of　concrete　was　obtained.　The　results　show　that　for　reinforced　concrete　with　the　same　cementitious　materials,　lowering　the　water-binder　ratio　(w/b)　of　concrete　decreases　the　corrosion　rate　and　electric　flux　accordingly.　For　reinforced　concrete　specimens　with　the　same　w/b,　supplementary　cementitious　materials　can　reduce　the　corrosion　rate.　Both　sulfate　corrosion　and　fatigue　loading　accelerate　the　corrosion　rate　and　electric　flux.　Under　sulfate　corrosion　environment,　the　relationship　between　corrosion　rate　and　electric　flux　is　fit　to　be　applied　as　a　regression　formula.