Fever, stomach pain and diarrhea can be treated first with oral rehydration salts to replenish lost water and electrolytes, and sometimes with antidiarrheal medications such as montelukast. If it is more serious and considered to be a bacterial infection, oral antibacterial drugs such as quinolones, clinically represented drugs such as ciprofloxacin and levofloxacin can be administered. These drugs can be used to treat digestive system infections caused by Gram-negative bacillary infections. For patients with a history of quinolone allergy, oral gentamicin and sulfonamides can be administered. It is important to pay attention to the hygiene of drinking water as well as the hygiene of food, and not to eat moldy or spoiled food, which is the only way to prevent acute gastroenteritis such as nausea, vomiting and diarrhea.