The present invention provides a plant disease control agent containing at least one of tetrazoyloxime derivatives and salts thereof, and at least one selected from the group consisting of fosetyl, propamocarb, basic copper chloride, chlorothalonil, manzeb, cymoxanil, folpet, iminoctadine, cyazofamid, metalaxyl, fludioxonil, tebuconazole, prothioconazole, thiamethoxam, azoxystrobin and salts thereof.