The invention relates to a pollution-free integrated control method for Bradysia odoriphaga and belongs to the technical field of integrated control on insect pests. The method is characterized in that the Bradysia odoriphaga is subjected to integrated control by using a combination of a Chinese herbal medicine, a pollution-free low-toxicity low-residue pesticide, chitin and castor cake meal, the Chinese herbal medicine is mainly prepared from eight kinds of Chinese medicinal herbs, such as fructus toosendan, nim, derris, stellera chamaejasme, pericarpium zanthoxyli, pepper, areca catechu and phellodendron amurense, ethanol lixiviate of the eight kinds of Chinese medicinal herbs is concentrated, then, the low-toxicity pesticide, chitin and the castor cake meal are added into the concentrated ethanol lixiviate so as to be mixed with the concentrated ethanol lixiviate, uniformly stirring the mixture and crushed Chinese medicinal herb residues, and then, the uniformly-stirred mixture is applied to a leek field together. The method can be used for effectively controlling the Bradysia odoriphaga, is low-toxicity and is free of pesticide residue, and people can eat safe leeks at ease, so that economic, social and ecological benefits are remarkable.