To perform a good drying processing at all times by properly removing foreign matters attached to the heating faces of heating plates.

In this drying method for drying the veneer a by carrying the veneer a between at least a pair of opposed heating plates 34B separating from each other, and thermally pressing the veneer a for a desired time by closing the opposed heating plates, thin plate-shaped sliding members-guide plates respectively having a width equal to the total width of the heating faces of each heating plates 34B and elastically deformably kept into contact with the heating faces of the opposed heating plates 34B at tip sections, are disposed on the lower ends of carrying-out grip members 45e, 45h vertically movably disposed between the opposed heating plates 34B to be used in a carrying-out motion of the dried veneer a, and in lowering the carrying-out grip members 45e, 45h in association with the carrying-out motion of the veneer a, the heating faces of the opposed heating plates 34B are scraped off and cleaned by the tip sections of the sliding members-guide plates, and then the veneer plate to be dried next is carried in and thermally pressed through carrying-in grip members not shown in drawing.