A　novel　Ag3PO4/ZnWO4-modified　graphite　felt　electrode　(AZW@GF)　was　prepared　by　drop　coating　method　and　applied　to　photoelectrocatalytic　removal　of　harmful　algae.　Results　showed　that　approximately　99.21%　of　chlorophyll　a　and　91.57%　of　Microcystin-LR　(MCLR)　were　degraded　by　the　AZW@GF-Pt　photoelectrocatalytic　system　under　the　optimal　operating　conditions　with　a　rate　constant　of　0.02617　min−1　and　0.01416　min−1,　respectively.　The　calculated　synergistic　coefficient　of　photoelectrocatalytic　algal　removal　and　MC-LR　degradation　by　the　AZW@GF-Pt　system　was　both　larger　than　1.9.　In　addition,　the　experiments　of　quenching　experiments　and　electron　spin　resonance　(ESR)　revealed　that　the　photoelectrocatalytic　reaction　mainly　generated　•OH　and　•O2-　for　algal　removal　and　MC-LR　degradation.　Furthermore,　the　potential　pathway　for　photoelectrocatalytic　degradation　of　MC-LR　was　proposed.　Finally,　the　photoelectrocatalytic　cycle　algae　removal　experiments　were　carried　out　on　AZW@GF　electrode,　which　was　found　to　maintain　the　algae　removal　efficiency　at　about　91%　after　three　cycles　of　use,　indicating　that　the　photoelectrocatalysis　of　AZW@GF　electrode　is　an　effective　emergency　algae　removal　technology.　©　2024　Elsevier　B.V.