The invention discloses a fluazinam and cyenopyrafen compounded acaricidal composition. The effective components of the acaricidal composition are fluazinam and cyenopyrafen, a weight ratio of fluazinam to cyenopyrafen is 20:1 to 1:20, and the acaricidal composition concretely comprises, by mass, 1-49% of cyenopyrafen, 1-49% of fluazinam, and the balance of assistants; the dosage of the acaricidal composition is a water suspension, an oil suspension, a water dispersible granule or a wettable powder; and the acaricidal composition mainly used for preventing and controlling herbivorous aphids on vegetables, fruit trees, tea trees, cotton and ornamental plants. The composition is an acaricidal binary compounded composition, and the effective components are fluazinam and cyenopyrafen, so the composition is resistant to rain erosion, and has effects on eggs and various mite states, and the two effective components are compounded to make the composition have the advantages of resistance delaying, good quick-acting property, long lasting period, prevention of plant diseases, and saving of time and labor.