To provide a method for decorating a fiber reinforced cement board in which application of coating to an uneven pattern on the surface is easily performed in a state enriched with a three-dimensional effect and also the fiber reinforced cement board is treated in a large amount.

Cement slurry A is supplied in a state of a layer 3 onto a felt belt 2 equipped with a suction dehydrating device 1. Then, a painting raw material B is sprayed on the surface and plate-making is performed. A plate is cut at every prescribed length and pressed and thereafter cured and hardened. Recessed parts deeper than at least the above-mentioned painting raw material layer are ground and worked on the surface.