To provide a synthetic board constituted such that a pushpin can be stuck easily and can be held certainly any number of times, the pin of the pushpin is prevented from being rusted, the reuse of a waste material or used product of a fabric, felt or a nonwoven fabric is enabled and cost reduction is contrived.

A cork sheet being a surface material is formed on at least one surface of a base material being a porous material with an apparent density of 0.3-0.7 g/cm3 formed by bonding constituent fibers with a fiber length of 3-10 mm by a fibrous or powdery binder component melted at temperature lower than the melting point of constituent fibers.