The present invention provides a production method that enables easy production of an electrode material for aluminum electrolytic capacitor having a high capacitance, and that enables, in particular, easy production of an electrode material for aluminum electrolytic capacitor having a high capacitance regardless of the average particle diameter (D50) of aluminum powder to be used. Specifically, the present invention provides a method for producing an electrode material for aluminum electrolytic capacitor, comprising the steps of: (1) a first step of forming a film of a paste composition containing powder of at least one of aluminum and an aluminum alloy, a binder resin, and a solvent on at least one surface of a substrate, (2) a second step of sintering the film, and (3) a third step of applying an etching treatment on the sintered film.