In general, patients with gastroenteritis can be relieved by diet and oral rehydration salts, but if nausea, vomiting and diarrhea are severe, accompanied by dehydration and electrolyte disorders, intravenous fluids should be given. Acute gastroenteritis is mostly characterized by vomiting followed by diarrhea, ranging from 3-5 times a day to dozens of times a day, with watery, dark yellow or green stools, abdominal cramps, fever, generalized aches and pains, and in severe cases, dehydration and electrolyte disorders. In addition to water loss, patients with vomiting and diarrhea also lose electrolytes, so they should be given dietary adjustments first, followed by oral rehydration salts. If the effect is poor and the patient has more serious vomiting and diarrhea, go to the hospital immediately to give rehydration or add anti-infection and other comprehensive treatment to avoid delaying the condition.