Food is paramount to the people. China is a populous country, as well as a culinary powerhouse. The concept of "big food" means that we need to understand and grasp the essence of producing food from a broader perspective. The news that Heilongjiang is preparing 100000 boxes of cranberries to be sent to Guangxi for free distribution to citizens has made many locals in Northeast China exclaim, "I don't know about my hometown's specialty?" In fact, cranberries were introduced to Heilongjiang from North America as early as ten years ago, and seeds from the black soil also set a precedent for the world's first cranberry breeding in space. With the eyes of discovery and exploration, we set out to open up a new world of the big food concept. The small cranberry has great enlightenment. Technological innovation has always been the top priority in the field of grain production. To establish the concept of a big food concept, it is necessary to take the path of technological innovation. The Southern Base of the Marine Aquaculture Seed Project of the National 863 Program in Zhanjiang, Guangdong Province, focuses on loading "Chinese chips" into fishery seeds. The research work on the selection and breeding of high-quality marine fish and shrimp, such as South American white shrimp, is carried out here in an orderly manner. Solving the problem of food is not enough to just focus on limited arable land. The 3 million square kilometers of marine land also has a big article to write about competition in the seed industry and food security. From a macro perspective, using technological innovation to achieve "increment" in multidimensional space is also the implementation and implementation of establishing the concept of big food. From "having" to "being excellent" is an important criterion for establishing the concept of large grain. At present, it is a trend to comprehensively guide the people to establish new concepts of food consumption, encourage nutrition, health, and green consumption. This also provides a powerful lever for the structural reform of the agricultural supply side. In the old area of Yudu in Jiangxi, the local selenium rich industry is running at a new speed. Products such as selenium rich rice, selenium rich navel oranges, and selenium rich vegetables are selling well in the national market, providing vivid examples for reference. From the fields to the dining tables of thousands of households, optimizing and upgrading food consumption is always presented in the most enjoyable way - eating healthy, nutritious, and happy. Such a big food concept is becoming a new trend! Establish a big food concept and make life more beautiful. In retrospect, there are too many good things related to food - Tianshui's Spicy Hot Pot has attracted people to the northwest town to punch in, Zibo barbecue's "three pieces of soul" is irresistible, and the popularity of "Erbin" is inseparable from the assistance of local sausage and frozen pear... With the development and progress of the times, the food structure of the people is also changing with the times. At this point, we emphasize the need to establish a big food concept, which not only meets the demand for quantity, but also