Summer is hot and humid, which is suitable for intestinal pathogenic bacteria to multiply. July and August are the peak months for diarrheal diseases in the city, and the infection targets mostly children and elementary school students. Contaminated food is the main means of transmission, and poor eating habits can lead to the occurrence of infection. Children’s resistance is poor, so it is more important for children to develop good personal hygiene habits, such as: not drinking raw water, washing hands before and after meals, eating well-cooked food, not eating raw and semi-raw aquatic products and unclean, unhygienic and rotten food, etc. Parents should pay attention to: put the food in the refrigerator, eat before the pot must be back to boil through; eat cold dishes, must be washed, mixed in time to eat, do not leave too long; cooking, raw and cooked foods are handled separately. Children are in a period of growth, need both rich and balanced nutrition. Milk, eggs, lean meat, fish and other high-quality protein should be adequately supplied, and more soy products; at the same time, fresh vegetables and fruits should not be missing. The body loses more water in the summer, so it needs to be replenished in time, and it is advisable to replenish water in small quantities. Summer children like to eat ice cream ice cream, drink cool drinks, eat a lot of these easy to hurt the spleen and stomach, should drink more plain water. In addition, salt should also be moderate. In the summer, children often have no appetite, mainly because: more water and salt loss in the body; reduced blood supply to the gastrointestinal tract during heat dissipation; poor rest and sleep for children; nerve center tension; a large amount of water at once, desalination of stomach acid, etc. caused. Children should be given more easily digestible, less greasy food, as well as eat vegetables and fruits rich in vitamin C and minerals, such as watermelon, tomatoes, winter melon, etc.; children can also be given some bitter foods, such as lettuce, celery, bitter melon, cilantro, etc.