To further strengthen the quality and safety supervision of veterinary drugs, January 21, 2015 the Ministry of Agriculture issued Notice No. 2210, decided to fully implement the veterinary drug "two-dimensional code" logo as the core of veterinary drug traceability supervision. What is the current progress of this work? What are the problems in the implementation process? The next step need to strengthen and improve the work of what? With these questions, the reporter recently interviewed the Ministry of Agriculture Veterinary Bureau of the relevant person in charge.