2,2　＇,4,4　＇-tetrabromodiphenyl　ether　(BDE-47)　is　a　highly　toxic　organic　pollutant.　Owing　to　the　high　structural　stability,　BDE-47　is　difficult　to　be　naturally　decomposed.　In　this　study,　Au　nanoparticles　decorated　flower-like　ZnIn2S4　microspheres　were　successfully　fabricated　and　applied　for　the　rapid　removal　of　BDE-47　driven　by　visible-light　irradiation.　It　was　revealed　that　3　wt%　Au-loaded　ZnIn2S4　(Au/ZnIn2S4)　has　the　highest　removal　rate　for　BDE-47　(0.90118　h-1).　A　study　of　the　reaction　path　and　mechanism　shows　that　the　bromine　adjacent　to　the　oxygen　atom　in　BDE-47　tends　to　be　removed　via　electron　transfer.　This　is　attributed　to　the　band-gap　excitation　of　ZnIn2S4,　the　surface　plasmon　resonance　effect　of　the　Au　nanoparticles,　and　the　Schottky　junctions　between　them.　Furthermore,　density　functional　theory　calculations　show　that　the　strong　affinity　between　Au0　and　the　bromine　atom　adjacent　to　the　oxygen　atom　in　BDE-47　can　lengthen　the　carbon-bromine　bond　and　further　weaken　the　bond　upon　the　accumulation　of　electrons.　This　may　be　the　main　reason　for　the　rapid　debromination　of　BDE-47.　This　study　provides　a　new　perspective　on　the　photocatalytic　removal　of　moderately　brominated　polybrominated　diphenyl　ethers.