The utility model relates to drying equipment. The utility model discloses an energy-saving type wet sand drying system. The device comprises a wet sand feeding sealing-tape machine (1), a drying combustion furnace (3) and a drying cylinder (5), a high-temperature pipeline (8) for connecting the air outlet of the drying cylinder with the air inlet (2) of the drying combustion furnace is arranged between the air outlet of the drying cylinder and the air inlet (2); a high-temperature heat exchanger (9) is arranged in the high-temperature pipeline; the high-temperature heat exchanger is providedwith a high-temperature humid air inlet (12), a low-temperature humid air outlet (13), a low-temperature dry air inlet (14) and a high-temperature dry air outlet (15); the high-temperature humid air inlet (12) is connected with an air outlet of the drying cylinder through a high-temperature pipeline, and the high-temperature dry air outlet (15) is connected with an air inlet of the drying combustion furnace through a high-temperature pipeline. According to the energy-saving type wet sand drying system, energy consumption of wet sand drying can be greatly reduced, so that fuel is saved, and thedrying cost is reduced.