This　work　provides　a　simple　approach　of　the　F--assisted　one-pot　hydrothermal　reaction　to　successfully　synthesize　Bi2WO6　hierarchical　erythrocyte　microspheres.　The　importance　role　of　F-　was　systematically　investigated　by　comparing　different　type　of　halogen　ions,　hydrothermal　temperature　and　time.　The　possible　growth　mechanism　of　Bi2WO6　hierarchical　structures　was　proposed.　The　hierarchical　erythrocytes　were　formed　through　the　well-ordered　and　oriented　self-assembly　of　thin　Bi2WO6　nanoplate　primary　subunits.　F-　ions　were　absorbed　on　Bi2WO6　nanoplate　surface　to　suppress　the　nanoplate　stack　but　to　induce　a　self-assembly　through　the　edge　interaction　of　Bi2WO6　nanoplates　into　erythrocyte-like　hierarchical　microspheres　superstructures.　This　erythrocyte　structure　narrowed　the　band　gap　energy　and　enhanced　the　visible-light　photocatalytic　activity　of　Bi2WO6.　Moreover,　superoxide　radical　anions　and　h(+)　were　revealed　as　the　main　active　species　responding　for　the　RhB　degradation　on　Bi2WO6　under　visible　light　irradiation.　(C)　2017　Elsevier　B.V.　All　rights　reserved.