Aluminum　alloy　7075　is　an　important　engineering　material　for　ship　structures.　However,　the　corrosion　of　Al　alloys　generally　exists　in　various　environments,　especially　in　the　marine　environment.　Currently,　the　corrosion　behaviors　of　Al　alloy　7075　in　sulfate-reducing　bacteria　(SRB)　marine　environment　has　not　been　well-addressed.　In　this　paper,　the　corrosion　effect　of　SRB　on　7075　aluminum　alloys　was　studied　by　adding　SRB　to　real　seawater.　The　microstructure　and　grain　orientation　of　the　super-hardness　Al　alloy　7075　were　studied　via　the　electron　back-scattered　diffraction　(EBSD)technology,　and　the　electrochemical　impedance　spectroscopy　(EIS)　test　of　the　electrochemical　corrosion　behavior　of　7075　in　a　variety　of　microorganisms,　mainly　SRB,　in　real　seawater　was　continuously　performed　for　21　days.　It　was　concluded　that　Al　alloy　7075　has　the　strongest　texture　intensity　on　the　(001),　(111),　(010),　and　(0-10)　planes,　which　is　2.565.　Adding　SRB　to　real　seawater　accelerated　the　corrosion　rate,　and　after　corrosion　on　the　14th　day,　the　protective　film　on　the　7075　aluminum　alloy　surface　was　completely　broken,　and　the　impedance　was　significantly　reduced.