The invention discloses a natural cooler device comprising a water pump, a water tank and a plurality of layers of heating panels which are provided with drain holes and arranged above the water tank, wherein the water inlet of the water pump is connected with the water tank through a water pipe. The natural cooler device is characterized by also comprising a cooling grid; the cooling grid is arranged below the heating panels, and water flowing out of the drain holes can be sprayed onto the cooling grid; the outlet of the cooling grid is arranged on the uppermost layer of heating panel so as to make the water flowing out of the cooling grid flow into the uppermost layer of heating panel. In the invention, cold water is adopted to absorb the heat emitted when a machine works, then the water is discharged to the uppermost layer of heating panel after being primarily cooled by the cooling grid, and the water is cooled again through the mode of water distribution and heat dissipation by the drain holes of the heating panels, wherein the process is circularly run by the water pump so as to uninterruptedly cool the machine. The device saves water and powerand has good cooling effect, thereby saving the production cost and improving the production efficiency.