The invention discloses a wood drying device, and relates to the technical field of wood processing equipment. The wood drying device comprises a heating oven provided with an oven door, wherein a drying frame is arranged in the hearing oven; the drying frame is of a cuboid frame structure and comprises multiple vertical rods, a top rod and multiple sets of corresponding cross rods, the vertical rods are perpendicular to the bottom of the heating oven, the top rod is fixedly connected with the tops of the vertical rods, and the cross rods are arranged below the top rod and along the vertical rods; each two cross rods are seen as a set and are separately arranged on the side, close to the oven door of the heating oven and on the side, close to the rear wall of the heating oven, of the cuboid, and the horizontal heights of each two cross rods are the same; multiple rows of metal rotating rollers are arranged in the drying frame, each metal rotating roller is arranged between each set ofthe cross rods through a supporting shaft, and protective nets are arranged on the two side faces, the back face and the top face of the drying frame; and a temperature sensor is arranged on the wallof the heating oven, and the control ends of the heating oven, the temperature sensor and the metal rotating rollers are connected with the controller. Compared with the prior art, the wood drying device has the beneficial effect of being capable of solving the problem of low wood drying efficiency of the existing technology.