The present invention provides the method for controlling plant disease for making plant disease control effect improve.A kind of method for controlling plant disease, it is characterized in that, by plant or cultivation of plants soil is applied to as the isopropyl metsulfovax of (a) ingredient or its salt, with as at least one kind of in nonionic surfactants, anionic surfactant, cationic system surfactant, vegetable oil, paraffin class and resinae of (b) ingredient.