Acute gastroenteritis is considered to be caused by unclean food or bacterial and viral infections. It is important to actively provide symptomatic treatment. For nausea and vomiting, use antispasmodic and antiemetic medications; for repeated diarrhea and dehydration, use intestinal firming and antidiarrheal medications; for obvious bacterial infections, antibiotics should be used, preferably quinolones. Be sure to drink plenty of water and replenish fluids in a timely manner. During the acute phase, do not eat anything to avoid overburdening the gastrointestinal tract. After recovery, increase the consumption of vegetables to enhance nutrition and improve the body's resistance. (Please use medication under the guidance of a doctor.)