The invention discloses a combined condensation type molten salt circulating device and an electrolytic furnace comprising the same. The combined condensation type molten salt circulating device comprises a condenser and a liquid-cooling jacket arranged outside the condenser. The condenser comprises a hollow gas channel. Cooling discs are arranged in the gas channel. Gas holes are formed between the cooling discs and the gas channel. Heat-exchange tubes are arranged on the cooling discs. The liquid-cooling jacket comprises a liquid-cooling heat-exchange cavity. A liquid inlet pipeline and a liquid outlet pipeline are arranged on the outer wall of the liquid-cooling heat-exchange cavity. A liquid inlet and a liquid outlet of each heat-exchange tube communicate with the liquid-cooling heat-exchange cavity. The invention further provides the electrolytic surface comprising the combined condensation type molten salt circulating device. The combined condensation type molten salt circulatingdevice is mounted on the molten salt electrolytic furnace, molten salt steam is rapidly cooled and condensed in the combined condensation type molten salt circulating device to form molten salt solidparticles, the molten salt solid particles automatically circulate back into the molten salt electrolytic surface under the gravity effect, and thus, molten salt is recycled. By adoption of the molten salt electrolytic surface comprising the combined condensation type molten salt circulating device, the production cost is greatly reduced, and meanwhile, the service life of a vacuum pump is prolonged.