The invention discloses an insecticidal composition containing fluchlorabendiamide and a bio-sourced insecticide. Effective active components comprise an active component A and an active component B,wherein the active component A is the fluchlorabendiamide; the active component B is selected from any one of abamectin, spinosad, spinetoram, bacillus thuringiensis, milbemectin, emamectin, emamectinbenzoate, sucrose octacarboxylate, beauveria bassiana, metarhizium anisopliae, nuclear polyhedrosis virus, cytoplasmic polyhedrosis virus and granulosis virus; wherein the weight ratio of the activecomponent A to the active component B is 1:80-80:1. The composition disclosed by the invention has a synergistic effect on various pests harmful to agricultural production, the dosage of pesticides isreduced, the residual quantity of the pesticides on crops is reduced, the environmental pollution is reduced, the composition is safe to human and livestock and good in environmental compatibility, and the generation of pest resistance is delayed.