To provide a woody board laminate excellent in safety, having biodegradability and low in production cost.

The woody board laminate is composed of at least two woody boards and the cured resin composition layer interposed between two adjacent woody boards. A cured resin composition comprises a cured reaction product of a mixture containing a polyol (i), a polyisocyanate (ii) and a soluble biodegradable substance (iii) dissolvable in the polyol and the ratio of the soluble biodegradable substance is 10-50 wt.% of the cured resin composition.