Gastrointestinal colds, also known as gastrointestinal colds, may be caused by weather changes, poor diet and viral infections. 1. Weather changes: may be stimulated by the outside air and caused by the gastrointestinal cold, the weather changes occur more cold and warm, usually in the spring and fall, the change of seasons, there may be gastrointestinal colds. 2. Bad diet: caused by eating bad food, such as eating expired food, spoiled food, and unfresh seafood and a series of food, resulting in the emergence of gastrointestinal colds. 3. Viral infections: Gastrointestinal colds can be caused by inflammation of the gastrointestinal tract due to coxsackie virus infection. The symptoms of gastrointestinal flu, such as nausea and vomiting, diarrhea, fever, etc., you need to go to the hospital in time, try to eat more easily digestible food during treatment, and pay attention to warmth and rest.