Residues of veterinary drugs is caused by the use of poor quality and illegal drug,veterinary drug residues in animal food have grievous threatens to the human healthy,and influences the development of animal husbandry in china and the expandedness towards the international market.Therefore,it is necessary to take effective measures to reduce and controlthe residues of veterinary drugs,study of the fair use and the development of veterinary drugs with high performance and low toxicity.This article summarized the develipments of the reasons for veterinary drug residues,its hazards and control measures.