As for this invention, formula (1)(In formula, as for R1 non substitution or the C1 - 6 alkyl groups etc which possess the substituent, as for q no integer 0 - 5, as for A formula (2) or (3)So to display the tetorazoiru basis which is displayed, as for D formula (4) or (5)(In formula, as for R2 the halogen atom and the like, as for n each integer 0 - 3, as for R3 the halogen atom and the like, as for R4 the hydrogen atom and the like, as for Q the C1 - 20 alkyl groups and the like are displayed.)So the basis which is displayed is displayed.)So the tetorazoiruokishimu derivative or that salt, and contains these at least kinds as the active ingredient the plant disease control medicine which are displayed are offered.本発明は、 式(1)〔式中、R1は無置換又は置換基を有するC1~6アルキル基等を、qは0~5のいずれかの整数を、Aは式(2)又は(3)で表されるテトラゾイル基を表し、Dは式(4)又は(5)(式中、R2はハロゲン原子等を、nは0~3のいずれかの整数を、R3はハロゲン原子等を、R4は水素原子等を、QはC1~20アルキル基等を表す。)で表される基を表す。〕で表されるテトラゾイルオキシム誘導体又はその塩、及びこれらの少なくとも一種を有効成分として含有する植物病害防除剤を提供する。