The invention relates to the field of wood processing, in particular to a plate drying device capable of decreasing cracks. A technology for plate processing is too old, and new technologies need to be put forward constantly to obtain high efficiency. According to the scheme of the plate drying device capable of decreasing the cracks, the plate drying device capable of decreasing the cracks is characterized in that the drying procedure 1 is conducted, specifically, plate sawing is conducted, and fast-growing eucalyptuses which are cut down in seven days are sawed-off into a plurality of sections according to the specific length and then the sections are sawed off into plates of the specific thicknesses; and the drying procedure 2 is conducted, specifically, the well-sawed all-wet plates are sent into a specialized drying space to be dried with the temperature in the drying space being 50-80 DEG C and the humidity in the drying space being about 10% in a first stage for one hour, and under the precondition that moisture is kept, the ventilation speed in the drying space is controlled. The plate drying device capable of decreasing the cracks has the advantage that the cracks can be effectively decreased.