Provided is a method for controlling a plant disease, which enhances the plant disease controlling effect. A method for controlling a plant disease, which is characterized by applying isofetamid or a salt thereof (component (a)) and at least one substance selected from the group consisting of nonionic surfactants, anionic surfactants, cationic surfactants, vegetable oils, paraffins and resins (component (b)) to a plant or the soil where the plant grows.
