There is no such thing as “the fastest and most complete treatment for acute gastroenteritis”, the treatment for acute gastroenteritis includes general treatment, medication and so on. 1. General treatment: If severe vomiting or diarrhea symptoms need to be temporarily fasting, those who can eat should eat small meals, avoid eating spicy stimulation and greasy food. 2. Medication: Loperamide can be used to stop diarrhea when accompanied by severe diarrhea, metoclopramide can be used to stop vomiting when accompanied by severe vomiting, oral or intravenous rehydration can be used when accompanied by dehydration, and ciprofloxacin and other antibiotics can be used when accompanied by bacterial infection. Patients diagnosed with acute gastroenteritis should be treated under the guidance of a doctor, and should not be treated blindly on their own.