When patients with acute gastroenteritis vomit everything they eat, they should temporarily abstain from food and water, and maintain water-electrolyte balance through intravenous fluid replacement. The specific treatment is as follows: 1. General treatment: Appropriate supplementation of sugar and salt water, to avoid too severe vomiting leading to dehydration will trigger the body’s acid-base balance imbalance. 2. medication: if there is intestinal infection, the application of antibiotics, such as levofloxacin, etc., severe vomiting can be given metoclopramide antiemetic, can also be added to the tetracycline tablets and other medications to regulate intestinal flora, accompanied by diarrhea can be added to the montmorillonite and so on. But in acute gastroenteritis eat everything vomit, oral medicine may not be well absorbed, according to the electrolyte test results of rehydration, to correct the electrolyte and acid-base balance disorders, so you should go to the hospital in a timely manner, to clarify the cause of the targeted treatment.