To provide a method for controlling plant diseases, which enhancing plant disease controlling effects. A method for controlling plant disease, which comprises applying isofetamid or its salt as a component (a) and at least one component (b) selected from the group consisting of a nonionic surfactant, an anionic surfactant, a cationic surfactant, a vegetable oil, a paraffin and a resin, to plants or to soil where they grow.
