This invention relates to a composition for controlling harmful arthropod, the composition containing chromafenozide and at least one compound for controlling riceblast selected from a group consisted of ferimzone, fthalide, kasugamycin hydrochloride, diclocymet and thiophanate methyl.本發明是關於一種有害節肢動物防治組成物等,該組成物係含有可芬諾,與至少1種由富米綜、熱必斯、嘉賜黴素鹽酸鹽、雙氯氰菌胺及甲基多保淨所成的群所選出的稻熱病防治化合物。