4-year-old children are in an important period of growth and development, and there are relatively many nutrients, especially calcium, zinc, iron and vitamins. Need it more than adults. Usually, you can eat more foods with high calcium content and zinc content, such as eggs, fish, ribs, beef, kelp, fungus and laver. The baby's spleen and stomach are weak. Usually, you should have a certain diet, eat less and eat more meals, and eat some fresh fruits and vegetables after meals.