PURPOSE: To prevent the generation of cracking, a pulled surface and torsion at the time of cutting and torsion, warpage, a dry spot, etc., after cutting by reducing cutting resistance in the manufacture of a decorative veneer obtained by cutting a wood flitch.

CONSTITUTION: A decorative veneer is manufactured in such a manner that a wood flitch 1 is formed by wood, internal residual stress thereof is reduced through heat treatment by a drying method, and said wood flitch is cut 2 and the decorative veneer 3 is prepared.