The invention discloses an insecticidal composition containing guadipyr and thiocyclam. The composition contains active ingredients of the guadipyr and the thiocyclam, wherein the mass ratio of the guadipyr to the thiocyclam is 1 to (1 to 60). The insecticidal composition disclosed by the invention has the advantages that an insecticidal spectrum is enlarged, and various insects can be treated byone-time drug application; in addition, the synergism is realized, the use amount of an insecticide can be reduced and the pollution of pesticide to the environment is reduced; meanwhile, labor intensity of farmers is also reduced. The price of the guadipyr is much higher than that of the thiocyclam. According to the insecticidal composition disclosed by the invention, by compounding the thiocyclam with small amount of the guadipyr, the insecticidal effect of the insecticidal composition is significantly higher than that of the guadipyr or the thiocyclam alone, the use amount of the insecticide can be reduced, the production cost is reduced and economic burden of the farmers is reduced.