The invention belongs to the field of pesticides, and discloses an insecticidal acaricidal composition containing an active component A and an active component B, wherein the active component A is selected from the following compounds disclosed in the specification; the active component B is selected from carbamate insecticides; and the weight ratio of the component A to the component B is 1:99-99:1. The composition has obvious synergistic action, widens the insecticidal spectrum, reduces the pesticide consumption, lowers the residue level of the pesticide on crops, and reduces the environmental pollution, and pests can not generate drug resistance. The composition can be widely used for preventing and treating multiple pests and acarids on multiple crops.