It　is　challenging　to　maximize　the　utilization　of　solar　energy　using　photocatalysis　or　photothermal　catalysis　alone.　Herein,　we　report　a　full　spectrum　solar　energy　driven　photothermal-assisted　photocatalytic　hydrogen　production　over　CuNi　bimetallic　nanoparticles　co-loaded　with　graphitized　carbon　nitride　nanosheet　layers　(CuxNiy/CN)　which　are　prepared　by　a　facile　in-situ　reduction　method.　Cu5Ni5/CN　shows　a　high　hydrogen　production　rate　of　267.8　μmol　g−1　h−1　at　room　temperature,　which　is　70.5　and　1.34　times　of　that　for　pure　CN　(3.8　μmol　g−1　h−1)　and　0.5　wt%　Pt/CN　(216　μmol　g−1　h−1),　respectively.　The　photothermal　catalytic　hydrogen　activity　can　be　further　increased　by　3.7　times　when　reaction　solution　is　external　heated　to　100　°C.　For　the　photothermal　catalytic　system,　the　local　surface　plasmon　resonance　(LSPR)　effect　over　active　Cu　nanoparticles　can　absorb　near-infrared　light　to　generate　hot　electrons,　which　are　partially　quenched　to　generate　heat　for　heating　of　the　reaction　system　and　partially　transported　to　the　active　sites,　where　the　Ni　nanoparticles　as　another　functional　component　couple　the　electrons　and　heat　to　finally　promote　the　photothermal　catalytic　activity.　Our　result　suggests　that　a　rational　design　of　the　catalyst　with　bifunctional　atomic　components　can　photothermocatalysis-assisted　photocatalysis　to　maximize　utilization　solar　energy　for　efficient　full　spectrum　conversion.　©　2022　Elsevier　Inc.