A production method for animal excretion treatment material and a production device therefor, having a step in which a raw material is pulverized and a pulverized material is obtained and a step in which the pulverized material is granulized. In the step in which the pulverized material is obtained, the raw material is pulverized by a pulverizer and the pulverized material is obtained. The pulverizer has: an insertion port for the raw material; a pulverization chamber for the raw material; a pulverization mechanism provided inside the pulverization chamber; a mesh screen through which passes the raw material pulverized by the pulverization mechanism and having a plurality of openings; and a discharge port connected to the openings in the mesh screen.
