Molybdenum　disulfide　(MoS2)　has　attracted　extensive　attention　as　an　alternative　to　replace　noble　electro-catalysts　in　the　hydrogen　evolution　reaction　(HER).　Here,　we　highlight　an　efficient　and　straightforward　ball　milling　method,　using　nanoscale　Cu　powders　as　reductant　to　reduce　MoS2　engineering　S-vacancies　into　MoS2　surfaces,　to　fabricate　a　defect-rich　MoS2　material　(DR-MoS2).　The　micron-sized　DR-MoS2　catalysts　exhibit　significantly　enhanced　catalytic　activity　for　HER　with　an　overpotential　(at　10　mA　cm(-2))　of　176　mV　in　acidic　media　and　189　mV　in　basic　media,　surpassing　most　of　Mo-based　catalysts　previously　reported,　especially　in　basic　solution.　Meanwhile　stability　tests　confirm　the　outstanding　durability　of　DR-MoS2　catalysts　in　both　acid　and　basic　electrolytes.　This　work　not　only　opens　a　new　pathway　to　implant　defects　to　MoS2,　but　also　provides　low-cost　alternative　for　efficient　electrocatalytic　production　of　hydrogen　in　both　alkaline　and　acidic　environments.