Traditional　metal　selenide　was　used　as　sodium　ion　battery　anode　on　account　of　its　high　specific　capacity　and　large　layer　spacing.　Here,　ZnSe/rGO　composites　are　synthesized　through　a　facile　one-step　hydrothermal　method　using　relatively　environmentally　friendly　raw　materials.　The　obtained　ZnSe　nanoparticles　with　a　diameter　of　about　50　nm,　which　evenly　distributed　on　the　three-dimensional　graphene　sheet.　Electrochemical　test　results　show　improved　performance,　under　a　current　density　of　100　mA　g(-1),　the　capacity　can　still　remain　276.6　mA　h　g(-1)　after　100　cycles.　For　rate　performance,　when　the　current　density　are　under　0.1,　0.2,　0.5,　1,　2,　5　and　10　A　g(-1),　the　capacity　can　remain　411.6,　385.9,　340.1,　293.9,　239.4,179.2　and　119.4　mA　h　g(-1),　respectively.　Furthermore,　under　a　large　current　density　of　500　mA　g(-1),　it　can　remain　a　reversible　capacity　of　119.4　mA　h　g(-1).　In　addition,　the　calculation　of　pseudocapacitance　shows　that　it　is　helpful　to　achieve　pleasing　rate　capability　and　long　cyclic　stability.　As　a　result　of　its　high　specific　surface　area　and　enhanced　electronic　conductivity,　an　improved　performance　can　be　obtain,　furthermore　can　well　alleviate　the　volume　expansion　of　the　composite.　(C)　2020　Elsevier　B.V.　All　rights　reserved.