Herein,　we　reported　a　octahedral　Cd-3(C3N3S3)(2)　coordination　polymer　as　a　new　noble　metal-free　photocatalyst　for　robust　photocatalytic　H2O2　production　from　methanol/water　solution.　The　coordination　polymer　can　give　an　unprecedented　H2O2　yield　of　ca.　110.0　mmol　center　dot　L-1　center　dot　g(-1)　at　pH　=　2.8　under　visible　light　illumination.　The　characterization　results　clearly　revealed　that　the　photocatalytic　H2O2　production　proceeds　by　a　pathway　of　two-electron　reduction　of　O-2　on　the　catalyst　surface.　This　work　showed　the　potential　perspective　of　M-x(C3N3S3)(y)　(M　=transitional　metals)　coordination　polymers　as　a　series　of　new　materials　for　solar　energy　storage　and　conversion.