As the saying goes, “Eat well in the morning, eat well at lunch, and eat little at night”. Breakfast is very important to us. Generally speaking, the time between breakfast and the previous meal or the latest meal is long, usually more than 10 hours, if we do not replenish calories in time, our body will use the glycogen stored in the liver, and when the glycogen is insufficient, blood sugar will be lower. Some studies show that blood sugar levels below 3.9mmo/L will lead to reduced brain excitability, slow reaction, inability to focus, hunger, and affect learning and work. It can be said that breakfast is to start the brain “switch”, long-term not to eat or unscientific breakfast can lead to a variety of diseases, such as may affect the growth and development of adolescents, causing mental discomfort, inducing gastrointestinal diseases such as enteritis, susceptible to colds, cardiovascular disease, etc., but also easy to gain weight, accelerate aging. At the same time, poor breakfast can have a negative impact on the cognitive ability of children and adolescents, as well as energy and nutrient intake. Only by eating breakfast and taking in enough energy can we maintain a better state throughout the day, especially the intake of carbohydrates, which can be converted into energy to be used by the body the fastest, especially for brain workers, which can be used by the brain after being quickly converted into energy. China’s 2016 Dietary Guidelines for Residents advocates a balanced dietary pattern of cereal-based and varied varieties. A reasonable breakfast should provide about one-third of the energy and nutrients throughout the day, meet the variety of food, try to provide as many kinds of nutrients as possible, including cereals and potatoes and other staple foods to provide carbohydrates, but also include eggs, milk or meat to provide high-quality protein, vegetables, fruits to provide rich vitamins and minerals, in order to ensure the energy and nutrient needs of the day, for a day of healthy life Lay a good foundation for a healthy day.