Abstract: This invention is concerned with a novel method for producing leather fibrous tissues in the form of raw material and semi-leather sheets produced by this method wherein odd flocks and other unnecessary fragments of animals' leathers produced subsequent to cutting or shaving operations of the leathers are cut into very short length in dried conditions and then resoluted in water, thereafter being dried up again to form small leather pieces. These pieces are selectively assorted through a filter means and uniformly stuck onto the outer surface area of a suitable basic clothing sheet. The invention further involves the construction of semi-leather sheet products produced by this method, which are far superior in heat-resisting, moisture-absorbent and releasing properties to the conventional semi-leather sheet products now on the market.