Disclosed is an arthropod pest control composition having an excellent controlling effect on arthropod pests, which comprises a compound represented by formula (I): wherein each symbol is as defined in the description; and at least one disinfectant compound selected from Group (A). Group (A): a group consisting of azoxystrobin, fluoxastrobin, pyraclostrobin, a compound represented by the following formula (1), trifloxystrobin, kresoxim-methyl, metominostrobin, picoxystrobin, enestrobin, dimoxystrobin, famoxadone, fenamidone and pyribencarb;