Diarrhea, nausea, vomiting, and weakness, this condition should be considered as a possibility of acute gastroenteritis. 1. You should actively hydrate and maintain normal blood volume. 2. You should use appropriate drugs to protect the gastric mucosa, such as omeprazole, pantoprazole, etc. 3. Symptomatic supportive treatment, if abdominal pain and bloating occur, use appropriate drugs to protect the gastric mucosa. 4. such as Simethicone, Flavopiridol, etc. 5. Pay attention to rest, light diet, and maintain normal water and electrolyte balance.