Four　different　structural　compositions　of　organophosphate,　3d　transition　metal,　4f　lanthanide　and　polyoxoniobate　(PONb)　are　unified　in　a　system　for　the　first　time　to　form　a　new　type　of　organophosphate　3d-4f　heterometallic　inorganic-organic　hybrid　PONb　nanowire.　Interesting　magnetic　anisotropy　and　slow　magnetic　relaxation　are　found　in　the　PONb　nanowire.　Integrate　four　structural　compositions　of　organophosphate,　3d　transition　metal,　4f　lanthanide　and　polyoxoniobate　at　the　molecular　level,　to　form　a　nanowire　structure.