To form a laminated decorative board having excellent durability, workability, designability and so on, and capable of adhering a synthetic resin decorative material from the grain to the base material surface without joints, moreover, inhibiting the occurrence of distortion or separation and crack of the decoration material.

A synthetic resin material 3 is faced along at least one surface in both surfaces of a base material 1 and at least one grain in a manner heating it in its melting point or lower and a softening point or higher, and the surface of the base material 2 and the synthetic resin surface decorative material 3 are joined by using a pressure sensitive adhesive double coated tape 4 of a thickness of 0.05-1.5mm.