The child’s stomach is weak, causing diarrhea, vomiting for many reasons, including improper diet, gastrointestinal inflammation, food poisoning, appendicitis, parasitic infections, etc., it is recommended to seek medical attention in a timely manner to find the cause so as to give targeted treatment. There are still many reasons why children have diarrhea and vomit, generally the following are common clinically: 1, diet: for example, children in daily life do not pay attention to diet, eat some cold food, such as ice-cream or chilled fruit, drinks, etc., or children eat some greasy, spicy, stimulating food, may cause children to appear diarrhea and vomiting; 2, acute gastroenteritis The actual fact is that you can find a lot of people who have been in contact with the actual items that may have bacteria or viruses, such as toys, or scratching around in public places, and eating without washing their hands and disinfecting in time, may lead to bacteria or viruses entering the gastrointestinal tract from the mouth, causing acute gastroenteritis. In addition to diarrhea and vomiting, bacterial infections can cause gastroenteritis with mucus or pus and blood in the stool, while viral infections cause gastroenteritis, in addition to diarrhea and vomiting, the stool is usually dilute watery or egg-flake soup-like; 3, food poisoning: for example, children eating some uncooked beans, special drugs or poisons, such as pesticides, can cause diarrhea and vomiting in children 4, acute surgical abdomen: for example, acute appendicitis. In this case, the child can also be accompanied by diarrhea, vomiting, along with progressive abdominal tenderness, and some children may also be accompanied by fever; 5, the presence of intestinal parasites: usually in the child’s diarrhea and vomit can be seen in the parasite or worm eggs.