Abstract: In the context of digital society, the food industry is also undergoing tremendous changes. The development of digitalization has brought new opportunities for the transfer, update and revolution of the food industry, which is not only a necessary requirement for the healthy development of the food industry, but also a requirement to conform to the development of the times. As a product of digital transformation, digital foods have typical features of precise or customized manufacturing and supply, which are produced by using digital technologies such as the internet of things, cloud computing, artificial intelligence and blockchain for digitization and integrative analysis of information such as physical properties, nutritional characteristics of food raw materials, and population nutritional characteristics for deep integration with high and new technologies such as food biosynthesis, food recombination, additive manufacturing, intelligent processing, and intelligent packaging. At present, a digital food industry model is being formed through the deep integration of digital technologies and physical food companies. Here, the progress and key technologies in digital foods are summarized, and future applications and challenges in this field are discussed.

Key words: digital food, digital technologies, big data, food industry