In　order　to　prepare　dense　and　smooth　tungsten　coatings,　a　class　of　additives　MOx　(M　=　Zr,　Ce,　La,　Y)　were　mixed　into　Na2WO4-WO3　molten　salt.　Composition　and　microstructure　of　tungsten　coatings　were　characterized　by　X-ray　diffraction　(XRD),　and　scanning　electron　microscopy　(SEM).　Different　MOx　additives　produce　significant　differences　in　the　phase,　micromorphology　and　performance　of　the　coatings.　The　coatings　electrodeposited　in　Na2WO4-WO3-CeO2　molten　salt　have　the　finest　grains,　resulting　in　the　microhardness　of　coating　surface　reaches　the　maximum　value　of　643.5　HV.　The　thermal　shock　resistance　in　air　atmosphere　is　related　to　the　phase　and　grains　size　of　the　coatings.　The　electrodeposition　mechanism　was　explored　by　cyclic　voltammetry　(CV),　linear　scan　voltammetry　(LSV),　square　wave　voltammetry　(SWV),　chronoamperometry　(CA)　and　open　circuit　chronopotentiometry　(OCP).　The　results　indicated　that　the　electrodeposition　of　tungsten　ions　is　W(VI)　-iota　W(IV)　-iota　W,　and　Zr4+　and　Ce4+　ions　are　electroreduced　in　two　steps,　while　La3+　and　Y3+　are　electroreduced　in　one　step.　The　differences　between　cathodic　electroreduction　potential　and　overpotential　induced　by　different　additives　were　probed.　What＇s　more,　the　relationship　between　micromorphology　and　performance　of　coatings　is　discussed.