The invention relates to an insecticidal composition containing Paichongding (1-((6-chloropyridine-3-group) methyl-5-propoxy-7-methyl-8-nitryl-1,2,3,5,6,7-hexahydroimidazo[1,2-a] pyridine) and bifenthrin, and the insecticidal composition is highly effective for preventing animal pests. The insecticidal composition comprises the active ingredients, Paichongding and the bifenthrin, wherein the weight ratio of the Paichongding to the bifenthrin is 1:25-25:1, and the percentage of the Paichongding and the bifenthrin in total in the composition is 1%-80%. According to the invention, the Paichongding and the bifenthrin are subjected to binary re-compounding, so that the insecticidal composition achieves a synergic effect at the aspect of insecticidal efficacy, particularly has remarkable effects on preventing Lepidoptera, Homoptera and arachnoide pests on wheat, rice and vegetables, and is particularly suitable for prevention of froghopper, leafhopper, treehopper, planthopper, phylloxera, mealywing, aphid, Diaspidiotus perniciosus Comstock, cotton bollworm and spider mite.