The main food therapy for pediatric indigestion is to eat barley as well as barley malt and the like. Then there is yogurt, apples, tomatoes, orange peels, and cabbage. Because barley as well as barley malt contains vitamins A, B, E and amylase, maltose, glucose, converting sugar enzyme, allantoin, proteolytic enzymes, fat and minerals, etc. Allantoin in barley can promote the healing of gastrointestinal ulcers.1. Yogurt, in addition to containing all the nutrients of milk, stands out for its richness in lactic acid, which can break down the lactose in milk into lactic acid. For people who lack lactase in their gastrointestinal tract or drink milk that is prone to diarrhea, they can drink yogurt instead. Lactic acid can inhibit the growth of mycobacteria in the body and can prevent dysbiosis caused by the use of antibacterial drugs. 2, apples can both stop diarrhea and laxative, which contains organic alkali and other substances with astringent effect, and the pectin contained can adsorb toxins. Apples also contain cellulose, which can stimulate intestinal peristalsis and accelerate defecation. 3, tomatoes, rich in organic acids and malic acid, citric acid, can protect vitamin C, so that it is not easily destroyed in the cooking process at home, increasing the utilization of vitamins.