Cadmium　sulfide　(CdS)　as　one　of　the　most　common　visible-light-responsive　photocatalysts　has　been　widely　investigated　for　hydrogen　generation.　However,　its　low　solar-hydrogen　conversion　efficiency　caused　by　fast　carrier　recombination　and　poor　catalytic　activity　hinders　its　practical　applications.　To　address　this　issue,　we　develop　a　novel　and　highly　efficient　nickel-cobalt　phosphide　and　phosphate　cocatalyst-modified　CdS　(NiCoP/CdS/NiCoPi)　photocatalyst　for　hydrogen　evolution.　The　dual-cocatalysts　were　simultaneously　deposited　on　CdS　during　one　phosphating　step　by　using　sodium　hypophosphate　as　the　phosphorus　source.　After　the　loading　of　the　dual-cocatalysts,　the　photocurrent　of　CdS　significantly　increased,　while　its　electrical　impedance　and　photoluminescence　emission　dramatically　decreased,　which　indicates　the　enhancement　of　charge　carrier　separation.　It　was　proposed　that　the　NiCoP　cocatalyst　accepts　electrons　and　promotes　hydrogen　evolution,　while　the　NiCoPi　cocatalyst　donates　electrons　and　accelerates　the　oxidation　of　sacrificial　agents　(e.g.,　lactic　acid).　Consequently,　the　visible-light-driven　hydrogen　evolution　of　this　composite　photocatalyst　greatly　improved.　The　dual-cocatalyst-modified　CdS　with　a　loading　content　of　5　mol　%　showed　a　high　hydrogen　evolution　rate　of　80.8　mmol·g-1·h-1,　which　was　202　times　higher　than　that　of　bare　CdS　(0.4　mmol·g-1·h-1).　This　is　the　highest　enhancement　factor　for　metal　phosphide-modified　CdS　photocatalysts.　It　also　exhibited　remarkable　stability　in　a　continuous　photocatalytic　test　with　a　total　reaction　time　of　24　h.