A plant disease control composition exhibiting an excellent control effect against plant diseases and comprising a tetrazolinone compound indicated by formula (1) and a QoI compound. [In the formula, n indicates an integer between 0 and 5, R1 indicates a halogen atom, etc., R2 indicates a C1-C3 alkyl group, etc., and R1 and R2 can have a halogen atom at an alkyl site. When n indicates an integer of at least 2, at least two R1 can be different.] Ideally, the weight ratio between the tetrazolinone compound and the QoI compound is 0.1/1-10/1 (tetrazolinone compound / QoI compound).
