Designing　highly　efficient　photocatalysts　is　significantly　important　to　degrade　the　harmful　pollutions　in　water.　In　this　study,　photocatalyst　of　Fe3O4-ED-rGO　with　dissolved　HPV　was　successfully　prepared　and　electron　microscopy　characterization　revealed　that　large　number　of　single　tungsten/vanadium　atom　oxide　(ST/VAO)　was　homogeneously　deposited　on　Fe3O4　nanoparticles　in　SMAO-MrGO-ED　sample　and　occupied　the　bivalent　Fe2+　sites.　Meanwhile,　phase　analysis　confirmed　that　the　Fe3O4　nanocomposites　were　mostly　conversed　from　the　reducted　Fe2O3　by　the　hydrolysis　of　rGO-ED-HPV.　Such　a　highly　dispersed　monatomic　adsorption　on　the　bivalent　Fe2+　of　polycrystalline　SMAO-MrGO-ED　nanocomposite　not　only　benefits　for　the　visible　light　absorption　from　2.7　eV　to　2.10　eV,　but　also　offers　abundantly　active　sites　to　get　the　highest　activity　of　98.43%　and　98.12%　for　ciprofloxacin　(CF)　and　ibuprofen　(IBF)　photodegradation,　respectively.　All　these　discoveries　give　us　a　new　insight　to　design　the　photocatalysts　with　high　photodegradation　efficiency,　low　cost,　short　reaction　time　and　good　reusability.