The invention relates to a method for producing modules for the production of two-dimensional or three-dimensional parts, said modules comprising elements made of natural fibres of plant origin. According to the invention, the method comprises the following steps: for each module, a) arranging said natural fibre elements in parallel and orienting them in the same direction i.e. that of the growth of the natural fibres, and b) assembling said natural fibre elements in order to form a module. The method is applicable to the production of wood constructions or clothes made of natural fibres.
