Adults with nausea, vomiting, diarrhea and other symptoms, consider the following aspects of the cause: 1, eating unclean food acute gastroenteritis, mainly closely related to bacterial and viral infections, often closely related to eating spoiled, rotting, contaminated food and drinks, the patient’s main manifestations of nausea, vomiting, fever, diarrhea, and even dehydration, the intestinal mucosa can be edema, congestion, spasm. 2, eating cold drinks, spicy, greasy, irritating food, resulting in indigestion, intestinal flora imbalance.3. Gastrointestinal colds, often accompanied by respiratory khat symptoms. When encountering vomiting, diarrhea and other situations, you can first oral Simida, that is, montelukast, the first to give effective antidiarrheal, protect the gastrointestinal mucosa, according to the condition of the antibiotics can be added, that is, anti-inflammatory drugs.