A pyrazole compound of formula (a): ##STR00001## wherein R.sup.1 represents C1-C4 alkyl or trifluoromethyl, R.sup.2 represents C1-C4 alkyl, R.sup.3 represents hydrogen or C1-C6 alkyl; R.sup.4 represents halogen and so on, m represents 0 to 4 integer; R.sup.5 represents halogen and so on, n represents 0 to 4 integer; R.sup.6 and R.sup.7 are same or different and represents hydrogen, halogen or methyl; X represents oxygen or R.sup.8O--N; R.sup.8 represents hydrogen, C1-C6 alkyl and the like; has an excellent controlling activity against noxious arthropods.