The present invention provides a composition for controlling a plant disease comprising a tetrazolinone compound represented by formula (1) wherein X1 represents a halogen atom etc., and X2 represents a C1-C3 alkyl group etc., and a carboxamide compound represented by formula (2), and a method for controlling a plant disease comprising a step of applying each effective amount of the tetrazolinone compound and the carboxamide compound to a plant or soil for cultivating the plant, the composition and method having excellent control efficacies against plant diseases.
