In view of the current situation of food safety incidents occurring from time to time in China the inconsistency of supervision subjects in China?? s food safety supervision the ??isolation of all kinds of information and the lack of whole-process supervision it is proposed to make full use of the advantages of new generation information technologies such as big data Internet of Things and cloud computing to ensure food safety. Through extensive research and in-depth analysis of domestic and foreign literature it is found that the use of big data technology can aggregate the massive data of food safety supervision involving the whole process of raw material supply food processing transportation and sales forming effective and real-time big data and effectively conducting food risk management and food supply chain management. The Internet of Things technology can be used to achieve whole-process traceability management of food safety so as to realize the supervision goal of food safety that the source can be traced the destination can be traced the responsibility can be investigated and the whole-process is under monitoring. Cloud computing can efficiently analyze big data in the whole process of food safety supervision without time and place restrictions. Cloud computing can also improve the problem of information asymmetry and solve the problem of information ?? islanding . The continuous integration and comprehensive promotion of the new generation of information technology in the application of food safety supervision can not only carry out passive traceability after the event but also realize active management and all-weather monitoring before and during the event effectively reducing the occurrence of food safety accidents and offering a strong guarantee for China's food safety.