This　paper　reports　a　novel　method　for　rapid　atomic-level　reconstruction　of　tungsten　carbide　(WC)　using　Na2CO3-　containing　molten　salt.　Herein,　WC　was　used　as　consumable　anode　and　Na2CO3　was　active　species　on　WC　anode　and　carbon　donor.　Thermodynamic　calculations　were　used　to　verify　the　feasibility　of　this　electrolytic　method　for　reconstructing　WC.　Experimental　results　showed　that　the　addition　of　Na2CO3　significantly　enhanced　dissolution　efficiency　of　WC.　Therefore,　more　tungsten　(W)　source　was　supplied.　Electrochemical　analysis　demonstrated　that　Na2CO3　also　supplied　carbon　by　two-step　reduction　process,　which　led　to　the　formation　of　WC.　These　experiments　confirmed　that　cathode　product　was　converted　from　W　to　WC　by　the　introduction　of　Na2CO3　additive　into　molten　salt.　WC　phase　started　to　form　at　cell　voltages　above　2.2　V.　In　initial　stage　of　reaction,　carbonate　was　preferentially　reduced　in　cathode　region　to　form　amorphous　C.　As　the　reaction　proceeded,　W　ions　migrated　from　anode　and　began　to　participate　in　reduction　process,　forming　W.　Finally,　W　was　transformed　to　WC　by　carbonization　process.