The　development　of　highly　active　and　stable　earth-abundant　electrocatalysts　to　reduce　or　eliminate　the　reliance　on　noble-metal　based　ones　for　hydrogen　evolution　reaction　(HER)　over　a　broad　pH　range　remains　a　great　challenge.　Herein,　hierarchical　porous　Co9S8/N-doped　carbon@MoS2　(Co9S8/NC@MoS2)　polyhedrons　have　been　synthesized　by　a　facile　hydrothermal　approach　using　highly　conductive　Co/NC　polyhedrons　composed　of　cobalt　nanoparticles　embedded　in　N-doped　carbon　matrices　as　both　the　structural　support　and　cobalt　source.　The　Co/NC　polyhedrons　were　prepared　by　direct　carbonization　of　Co-based　zeolitic　imidazolate　framework　(ZIF-67)　in　Ar　atmosphere.　Benefiting　from　the　prominent　synergistic　effect　of　N-doped　carbon　enhancing　the　conductivity　of　the　hybrid,　MoS2　and　Co9S8　providing　abundant　catalytically　active　sites　as　well　as　the　well-defined　polyhedral　structure　promoting　mechanical　stability,　the　as-synthesized　Co9S8/NC@MoS2　shows　excellent　HER　activity　and　good　stability　over　a　broad　pH　range,　with　onset　overpotentials　of　4,　38,　and　45　mV,　Tafel　slopes　of　60.3,　68.8,　and　126.1　mV　dec-1,　and　overpotentials　of　67,　117,　and　261　mV　at　10　mA　cm-2　in　1.0　M　KOH,　0.5　M　H2SO4,　and　1.0　M　phosphate　buffer　solution　(PBS),　respectively.　This　work　provides　a　general　and　promising　approach　for　the　design　and　synthesis　of　inexpensive　and　efficient　pH-universal　HER　electrocatalysts.　©　2017　American　Chemical　Society.