The invention belongs to the technical field of pesticides, and particularly relates to a
pesticide composition for preventing and treating
bactrocera cucurbitae. The invention relates to a
pesticide composition with insecticidal activity. The
pesticide composition with insecticidal activity is prepared by binary compounding of arfamarin and
flubendiamide or tolfenpyrad, wherein the
mass ratio of the arfamarin to the
flubendiamide is (1-15): (9-1); the
mass ratio of the arfamparin to the tetratolfenpyrad is (1-30): (30-1). According to the pesticide composition disclosed by the invention, the arfamparin and the
flubendiamide or the tetratolfenpyrad with different action mechanisms are compounded, and the compounded composition shows a synergistic effect on killing the
bactrocera cucurbitae, so that the
control effect can be improved, the dosage of the pesticide can be reduced, and the pesticide cost can be reduced. Meanwhile, the compound can also be used for preparing
stomach poison agents and poison baits with efficient insecticidal activity on the
bactrocera cucurbitae, and has important significance on prevention and control of the bactrocera cucurbitae.