Students can eat bananas, cucumbers, melons, tomatoes, lemons and so on. It has a good effect on losing weight. This kind of food can promote the digestion of gastrointestinal tract, have the function of moistening intestines and relaxing bowels, eliminate excess fat in the body and meet the nutrition needed by the body at the same time. Primary school students should have a reasonable diet during weight loss, and try to control their diet under the condition of ensuring balanced nutrition to avoid excessive weight loss and affecting their growth and development. Don't eat sweets and exercise properly when you lose weight.