Abstract: In order to regularize farmers’ disposing behavior of dead pigs, to make the pork safety and public health and to protect ecological environment, the research summarized four dimensions and 17 main factors that may affect farmers’ disposing behavior of dead pigs based on existing findings, used a method known as DANP that combines DEMATEL (decision making trial and evaluation laboratory) with ANP (analytic network process), to quantitatively analyze the relationship among dimensions and factors that influence farmers’ disposing behavior of dead pigs and then to identify the critical factors. The results show that production characteristics were the most important dimension of pig farmers. In the influencing weight, the highest five factors are knowledge of relevant laws and regulations, knowledge of pig disease and prevention, costs and profits, scale of farming, and mode of farming. In this paper, the research demonstrated DANP is an effective method that can identify the critical factors and our conclusions provide some useful decision-making reference for the government to regulate the farmers’ behavior of disposing dead pigs.