ZnIn2S4　has　been　extensively　studied　in　the　field　of　photocatalytic　hydrogen　evolution　(PHE),　but　its　bulky　structure　often　results　in　high　charge　carrier　recombination　and　low　light　harvesting　capability.　Herein,　efficient　hierarchical　MGa2O4/ZnIn2S4　(M　=　Ni,　Co)　hollow　nanofiber　photocatalysts　with　p-n　heterojunction　were　fabricated　by　an　electrospinning-solvothermal　method.　The　hierarchical　structure　of　MGa2O4/ZnIn2S4　composites　has　facilitated　p-n　heterojunction　formation,　promoted　the　charge　separation　efficiency,　enhanced　light　harvesting　capability,　and　provided　abundant　reactive　sites.　The　synergistic　effects　of　MGa2O4　and　ZnIn2S4　accelerated　the　PHE　rate　by　reducing　the　*H　reaction　intermediates　energy　barrier.　Under　simulated　solar　light,　the　NiGa2O4/ZnIn2S4　and　CoGa2O4/ZnIn2S4　with　optimal　proportions　delivered　outstanding　PHE　rate　of　9292　and　6283　µmol·g−1·h−1,　which　was　5　and　3　times　higher　than　that　of　pure　ZnIn2S4,　respectively.　This　work　opens　up　an　efficient　electrospinning-mediated　solvothermal　strategy　for　constructing　hierarchical　ZnIn2S4-based　nanofiber　composites　with　excellent　PHE　performance.　©　2024　Elsevier　Ltd