The present invention provides a harmful arthropod-controlling composition, which includes a cyanamide compound represented by formula (1) an insect growth-controlling compound selected from Group A, and at least one or more of cucumeris controlling compound selected from Group B.Group A: the group consisting of Methoxyfenozide, Chroafenozide and Tebufenozide.Group B: the group consisting of Flutolanil, Pencycuron, N-[2-(1, 3-dimetnylbutyl) phenyl]-5-fluoro-1, 3-dimethyl-1H-pyrazole-4-formamide, Furametpyr and Validamycin A.本發明為一種有害節肢動物防治組成物,其含有:式(1)表示之氰胺化合物1種以上之選自群(A)之昆蟲成長控制化合物、及1種以上之選自群(B)之紋枯病防治化合物。群(A):由滅芬諾、可芬諾及得芬諾所成之群組。群(B):由福多寧、賓克隆、N-[2-(1,3-二甲基丁基)苯基]-5-氟-1,3-二甲基-1H-吡唑-4-甲醯胺、福拉比及維利黴素所成之群組。
