Fragrant, crisp, sweet, sour and salty snacks, such as plum, toffee and chocolate, are all children's favorite foods. Often dinner is not eaten, and these foods do not leave the mouth. As a result, the children get thinner and thinner. Eat three meals a day regularly and quantitatively, and don't give children snacks before meals, so as not to affect their appetite. Children eat a good dinner, it is no longer like eating snacks. Parents should help their children to establish a reasonable work and rest system, so that children can eat on time and develop good living habits. Psychology tells us that the same stimulus will form a fixed conditioned reflex system (that is, dynamic stereotype) in the cerebral cortex, which is often called "habit becomes nature". Once good habits are formed, children can eat on time without having to work hard all the time. Whenever they are close to eating, they will feel hungry and have a conditioned reflex. The digestive organs will secrete digestive juice, and the stomach will peristalsis on time, which will make children eat sweet and easy to digest and absorb food. Therefore, it can be said that the cultivation of good eating habits is also an educational means, which is not only beneficial to the physical health of primary school students, but also conducive to cultivating their organizational and discipline qualities. ......