Once, people only focused on "having enough to eat", and a bowl of rice paired with some pickled vegetables was a meal; Nowadays, "health" is already a necessity. A small bowl of rice paired with meat and vegetable dishes is very important. In the pursuit of a healthy lifestyle, healthy diet and dietary nutrition are crucial components. Our body is like a house, and diet is the cornerstone of this house. Dietary nutrition is the core of the foundation, directly related to the health status of the body. At present, the people's demand for food is more diverse, and food safety is expanding from quantity safety and quality safety to nutrition and health. Eating with more peace of mind, nutrition, and safety has become a new demand for everyone. The quality of food affects the health and happiness of the people. Food is a daily necessity that everyone cannot do without, and it is the energy foundation for people to engage in all other activities. The World Health Organization once defined "health" as a "complete state of physical, mental, and social well-being," and food health is closely related to physical, mental, and social well-being. Food safety and nutrition are prerequisites for people's healthy lives. A large number of studies have shown that the dietary patterns of different populations are related to the incidence of cardiovascular disease, diabetes and other diseases; The proportion of deaths caused by endocrine diseases, malignant tumors, and other diseases to the total number of deaths is significantly positively correlated with the consumption of animal derived foods and fats. Global burden of disease research shows that one of the main factors contributing to the occurrence of diseases among Chinese people is an unreasonable diet. A study published in the Lancet magazine once mentioned that high salt or sodium intake ranks first among the causes of cardiovascular and other chronic diseases in China. Therefore, promoting healthy eating and promoting food safety knowledge are also important means to improve the overall health level of society and promote sustainable development of social health. Food health is closely related to individual mental health status. Research has shown that consuming foods rich in minerals, vitamins, and antioxidants can improve mood, alleviate anxiety and depression. In April 2024, a tracking survey of 180000 people in the journal Nature Mental Health showed that the risk of mental disorders varies with different dietary preferences. Picky and picky eaters can affect mood and cause malnutrition. People with a balanced diet often exhibit better psychological resilience and better cognitive abilities. It can be seen that the quality of food affects the health and happiness index of the people, and healthy and safe food will have a profound impact on people's health and sustainable social development. At present, the people's yearning for a better life is reflected in "eating", which is a more diverse, nutritious and healthy food supply. As the starting point of the food supply chain, agricultural production must establish scientific and standardized production standards, and adopt safe and sustainable agricultural production models. By monitoring the agricultural environment and pesticide use throughout the process, we ensure the quality and safety of agricultural products and provide reliable raw materials for subsequent processing and consumption. On the basis of ensuring basic self-sufficiency in grain and absolute food security, attention should be paid to the supply of other important agricultural products, including meat, eggs, milk, vegetables, fruits, fish, etc. The concept of big food is an expansion and extension of the traditional food security concept, breaking the traditional belief that food mainly comes from cultivated land and moving towards cultivated land grass