The invention discloses a synergistic pesticidal composition containing pymetrozine and
bifenthrin and application thereof. The synergistic pesticidal composition adopts pymetrozine and
bifenthrin as the main effective components, wherein the weight ratio of pymetrozine to
bifenthrin is 0.1-70:0.1-80. The synergistic pesticidal composition can be used for preventing and controlling resistant
hemiptera pests, particularly can be used for preventing and controlling paddy delphacidae,
plant louses and bemisia tabaci, and the effect is obviously higher than the application of a single
dose. The synergistic pesticidal composition has a higher synergistic effect, overcomes and delays drag resistance, and expands prevention and control spectrum. The synergistic pesticidal composition has the advantages of high pesticidal speed, long duration, reduction of cost and decrease of
toxicity.