As food safety has attracted the widespread attention of society, the quality safety of agricultural products has become an important part of food safety and also confronts multiple challenges. In fact, the safe use of veterinary drugs in the production process has become one of important guarantees for the quality safety of agricultural products. It's of great significance to regulate the breeding farmers' safe use of veterinary drugs and to create a safe and healthy production environment for agricultural products. A field survey of individual and large-scale swine breeding farmers in four typical provinces including Henan, Shandong, Jiangxi and Guizhou generated 397 questionnaires. This field survey conducted the internal and external classification of breeding farmers' safe use of veterinary drugs and defined the breeding farmers' safe use of veterinary drugs in the light of dosage, type and standardized operation of veterinary drugs. Based on Lewin's behavior theory, the survey used the structural equation modeling method to systematically examine the generation path of breeding farmers' safe use of veterinary drugs. The comprehensive analysis reveals that breeding farmers' knowledge about veterinary drugs, the attitudes toward the government supervision and the market environment of breeding activities all exert some effects on breeding farmers' use of veterinary drugs. Some suggestions and countermeasures for breeding farmers' safe use of veterinary drugs are provided as follows: First, more efforts should be pumped into publicity and instruction so that breeding farmers can have a better understanding of veterinary drugs. Second, preferential policies should be formulated to encourage the breeding farmers' participation in the industrial organizations of swine breeding farmers, and advocate the industrial organizations' active provision of different technical trainings. Third, the communication and cooperation platform should be created among breeding farmers, slaughter and processing plants and supermarkets, the poultry insurance market should be regulated, and the insurance purchase process should be improved. Fourth, when more subsidies for harm-free and environment-friendly veterinary drugs are provided, more serious punishments should be imposed on the unsafe use of veterinary drugs to offer policy support for the breeding farmers' standardized use of veterinary drugs.
Keywords: Lewin’s behavior theory; breeding farmers; safety behavior decision; veterinary drugs.