To provide a composite woody panel which is simply and inexpensively prevented from the occurrence of warpage accompanied by a moisture absorbing and discharging dimensional change, while effectively utilizing the surface smoothness being inherent in an engineering board such as MDF or PB and has rigidity.

Woody veneer 3, of which the moisture absorbing and discharging characteristics are equal to those of a woody base material 2 is laminated on the back of the woody base material. The composite woody panel is upwardly warped so that the surface side of the woody base material having the woody veneer laminated on its back is raised. The woody veneer is laminated to the surface of the woody base material of the composite woody panel having a first or second feature.