A herbicidal composition comprising (i) a synergistic herbicidal composition in an amount to show a herbicidal activity, (ii) at least one inert liquid carrier and/or solid carrier, and, if necessary, (iii) at least one surfactant. wherein the synergisitic herbicidal composition (i) comprises as active ingredients: (a) a Component A which is 3-[(5-difluoromethoxy-1-methyl-3-trifluoromethylpyrazol-4-yl)methylsulfonyl]-4,5-dihydro-5,5-dimethylisoxazole or its salt, and (b) a Component B, which is at least one compound selected from the group consisting of clodinafop-propargyl, cycloxydim, diclofop-methyl, quizalofop-P-ethyl, sethoxydim, tepraloxydim, tralkoxydim, amidosulfuron, bispyribac-sodium, chlorimuron-ethyl, florasulam, flucarbazone-sodium, imazamethabenz-methyl, imazamox, imazapic, imazaquin, iodosulfuron-methyl-sodium, mesosulfuron-methyl, pyrithiobac-sodium, sulfosulfuron, tribenuron-methyl, ametryn, chlorotoluron, diuron, hexazinone, isoproturon, tebuthiuron, terbuthylazin, paraquat, fluthiacet-methyl, fomesafen, pyraflufen-ethyl sulfentrazone, clomazone, flurtamone, norflurazon, picolinafen, sulcotrione, bilanafos, asulam, acetochlor, dimethenamid-P, flufenacet, metazachlor, trifluralin, isoxaben, prosulfocarb, thiobencarb, triallate, 2,4-D, fluroxypyr, quinclorac, diflufenzopyr, difenzoquat, pinoxaden, propoxycarbazone-sodium, and pyrimisulfan. (i) a synergistic herbicidal composition in an amount to show a herbicidal activity, (ii) at least one inert liquid carrier and/or solid carrier, and, if necessary, (iii) at least one surfactant. wherein the synergisitic herbicidal composition (i) comprises as active ingredients: (a) a Component A which is 3-[(5-difluoromethoxy-1-methyl-3-trifluoromethylpyrazol-4-yl)methylsulfonyl]-4,5-dihydro-5,5-dimethylisoxazole or its salt, and (b) a Component B, which is at least one compound selected from the group consisting of clodinafop-propargyl, cycloxydim, diclofop-methyl, quizalofop-P-ethyl, sethoxydim, tepraloxydim, tralkoxydim, amidosulfuron, bispyribac-sodium, chlorimuron-ethyl, florasulam, flucarbazone-sodium, imazamethabenz-methyl, imazamox, imazapic, imazaquin, iodosulfuron-methyl-sodium, mesosulfuron-methyl, pyrithiobac-sodium, sulfosulfuron, tribenuron-methyl, ametryn, chlorotoluron, diuron, hexazinone, isoproturon, tebuthiuron, terbuthylazin, paraquat, fluthiacet-methyl, fomesafen, pyraflufen-ethyl sulfentrazone, clomazone, flurtamone, norflurazon, picolinafen, sulcotrione, bilanafos, asulam, acetochlor, dimethenamid-P, flufenacet, metazachlor, trifluralin, isoxaben, prosulfocarb, thiobencarb, triallate, 2,4-D, fluroxypyr, quinclorac, diflufenzopyr, difenzoquat, pinoxaden, propoxycarbazone-sodium, and pyrimisulfan. (a) a Component A which is 3-[(5-difluoromethoxy-1-methyl-3-trifluoromethylpyrazol-4-yl)methylsulfonyl]-4,5-dihydro-5,5-dimethylisoxazole or its salt, and (b) a Component B, which is at least one compound selected from the group consisting of clodinafop-propargyl, cycloxydim, diclofop-methyl, quizalofop-P-ethyl, sethoxydim, tepraloxydim, tralkoxydim, amidosulfuron, bispyribac-sodium, chlorimuron-ethyl, florasulam, flucarbazone-sodium, imazamethabenz-methyl, imazamox, imazapic, imazaquin, iodosulfuron-methyl-sodium, mesosulfuron-methyl, pyrithiobac-sodium, sulfosulfuron, tribenuron-methyl, ametryn, chlorotoluron, diuron, hexazinone, isoproturon, tebuthiuron, terbuthylazin, paraquat, fluthiacet-methyl, fomesafen, pyraflufen-ethyl sulfentrazone, clomazone, flurtamone, norflurazon, picolinafen, sulcotrione, bilanafos, asulam, acetochlor, dimethenamid-P, flufenacet, metazachlor, trifluralin, isoxaben, prosulfocarb, thiobencarb, triallate, 2,4-D, fluroxypyr, quinclorac, diflufenzopyr, difenzoquat, pinoxaden, propoxycarbazone-sodium, and pyrimisulfan.