China is a big country for pig production and consumption. Residents’ purchase intention and payment behaviors for safety certification of pork are crucial to the development of pig industry and market safety，and have a far-reaching impact on food safety in the pork industry. Due to the high collection cost of consumers’ real behavior information and the complicated process，the existing researches are mostly based on the perspective of consumers’ purchase intentions，with a view to providing certain reference suggestions for producers，sales companies，government and other relevant stakeholders. However，due to the uncertainty of the preferences and the interference of the external environment，consumers’ willingness expression often has a certain gap with the realistic choice. The study of consumers’ purchase intention has certain limitations because of the deviation of payment behavior. To understand the deviation between consumers’ purchase intention and payment behavior and its causes，this paper uses the Probit model to conduct a systematic analysis based on the field survey data of 984 consumers in 7 cities of Jiangsu and Anhui provinces. The results show that：①The discrepancy between consumers’ purchase intention and payment behavior of safe certified pork is ubiquitous，especially in the consumer groups with purchase intention，the deviation is more obvious；②The safety satisfaction of pork market and annual family income are important causes leading to the deviation. The higher the security satisfaction of pork market and annual income of the family are，the greater the possibility of the disagreement between the consumer’s purchase intention and the payment behavior is；③Factors such as consumers’ age，education level，trust degree of certification mark，knowledge of safe certified pork，convenience of purchase channel and purchase condition have negative effect on the formation of deviation，and can effectively promote the consumer’s willingness to purchase safe certified pork into a real payment behavior. In view of the above conclusions，in order to promote the safety certification of the pork market，improve the quality of pork products and effectively ensure the food safety，the article puts forward the following policy suggestions：①Strengthen the publicity of public food safety knowledge and improve the level of knowledge and trust of residents in the safety certification of pork；②Carry out active product promotion and channel expansion to improve the convenience of purchasing safe certified pork for public；③Optimize the production process of safe certified pork，reduce the cost of marketing and improve the purchasing ability of residents.