The invention discloses an efficient insecticidal composition, which comprises an active ingredient A and an active ingredient B. The active ingredient A is cyflumetofen. The active ingredient B can be one of compositions, including halfenprox, tebufenpyrad and fenazaquin. The weight ratio of the active ingredient A to the active ingredient B is 1:60-60:1. The efficient insecticidal composition can be used for controlling various pests, has evident synergetic effect and broadened insecticidal spectrum, and has higher activity against Panonychus, Phyllocoptruta oleivora ashmead, Penthaleus major, yellow spider, red spider mite, Polyphagotarsonemus Latus, Tetranychus cinnabarinus, two-spotted spider mite, spider mite, red spider, rust mite and the like on cereal crops, fruit trees, ornamental plants, cotton, tea trees and vegetables. By using the efficient insecticidal composition, consumption of pesticides is reduced, residue of the pesticides on the crops is reduced, and environment pollution is lessened. The efficient insecticidal composition is safe to people and livestock and highly compatible with environment, and pests are less apt to resist the efficient insecticidal composition.