High school students can eat a moderate amount of yogurt, a small amount of nuts or a certain amount of fruit after ten o’clock in the evening study hall. High school students can add some food before bedtime to accommodate their body’s nutritional needs because of their busy school schedule and rapid growth and development. This mainly includes dairy products, fruits and a few nuts. Take yogurt as an example, each 100 grams of yogurt contains 72 calories, of which 9.3 grams of carbohydrates, 2.7 grams of fat, 2.5 grams of protein and 118 milligrams of calcium. Appropriate supplementation of yogurt can increase the source of high-quality protein and provide children with enough calcium to meet the nutritional needs of high school students’ rapid growth and development. Fruits, which are high in water, carbohydrates, and vitamins, are also a more ideal source of nutrients, healthy and mostly low in calories. Fruits can be consumed at around 200-350 grams a day. Nuts are generally high in polyunsaturated fatty acids and monounsaturated fatty acids, which are a source of high quality fats and oils, and these fatty acids are also very beneficial for brain development. About 15 grams of nuts a day is sufficient. It is recommended that high school students eat the above food properly after ten o’clock in the evening study hall, try not to eat cookies, instant noodles, French fries this kind of unhealthy food, and not too recommended to eat four meals a day, which is easy to lead to excess nutrients, triggering obesity and other problems.