Electrochemical　water　splitting　by　electrocatalyst　is　one　of　the　most　promising　ways　for　generating　and　utilizing　hydrogen　energy,　and　it　is　critical　to　effectively　mitigate　the　serious　energy　crisis　and　environmental　pollution.　However,the　widely　application　of　electrocatalysis　technology　is　still　limited　by　its　low　conversion　efficiency　and　high　cost.　For　this　purpose,developing　electrocatalyst　materials　with　high　activity,low　cost　and　well　stability　are　critical　to　solve　the　above　limitions.　As　an　inexpensive　and　readily　available　two-dimensional　material,molybdenum　disulfide　is　considered　as　a　promising　candidate　to　replace　noble　metal　catalysts　due　to　its　good　catalytic　activity　for　electrocatalytic　hydrogen　evolution,which　realize　the　industrial　application.　However,the　inert　basal　plane　and　low　electrical　conductivity　of　pristine　MoS2　limit　the　further　improvement　of　its　electrocatalytic　performance.　In　this　review,　starting　from　the　mechanism　of　water　electrolysis　and　the　inherent　feature　of　molybdenum　disulfide　electrocatalysts,the　latest　research　progress　of　various　modification　strategies　to　improve　the　catalytic　performance　of　MoS2　was　summarized.　Moreover,the　intrinsic　mechanism　of　different　modification　strategies　in　the　catalytic　reaction　process　was　highlighted　and　their　respective　drawbacks　were　indicated.　Finally,it　was　pointed　out　that　the　current　molybdenum　disulfide　catalyst　should　be　further　developed　towards　a　combination　of　multiple　modification　measures,theoretical　guidance　for　experiments,and　rapid　and　effective　synthesis.