In　this　study,　combination　of　wave　absorption　materials　with　different　loss　mechanisms　are　added　into　iron　ore　tailings-blast　furnace　slag　(IOT-BFS)　based　geopolymers.　The　employed　materials　are　hollow　glass　microsphere　(HGM),　carbon　nanotubes　(CNT)　and　carbonyl　iron　powder　(CIP).　Microstructures　of　the　geopolymers　are　characterized　by　X-ray　diffraction　(XRD),　scanning　electron　microscopy　(SEM)　and　concrete　porous　structure　analyzer.　Conductivity　and　electromagnetic　absorption　property　of　the　geopolymers　are　measured　by　a　conductivity　tester　and　a　vector　network　analyzer　(VNA).　As　increasing　the　content　of　wave　absorption　materials,　compressive　strength　of　the　geopolymer　decreased　from　60.5　to　33.8　MPa.　Compared　with　geopolymers　containing　HGM　and　CNT,　wave　absorption　band　below　-5　dB　of　the　geopolymers　with　HGM　and　CIP　was　wider,　particularly　at　frequencies　below　7　GHz,　due　to　the　synergism　of　space　and　magnetic　loss.　Its　absorption　bandwidth　with　the　reflection　loss　less　than　-5　dB　reaches　15.6　GHz.　This　study　gives　a　clue　for　preparation　of　geopolymers　with　satisfactory　electromagnetic　wave　absorption　properties　in　the　utilization　as　construction　materials.