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.　©　2020　Elsevier　B.V.