Nausea, vomiting, diarrhea may be caused by acute gastroenteritis or gastrointestinal flu. 1. Acute gastroenteritis: the intestinal tract is infected with inflammatory response to nausea, vomiting, diarrhea symptoms, treatment attention to rehydration to prevent electrolyte disorders, such as bacterial infections can be antibacterial treatment, you can choose the ciprofloxacin, levofloxacin and so on. 2. Gastrointestinal flu: symptoms of the onset of digestive symptoms, such as nausea, vomiting, diarrhea, etc., treatment can be oral patchouli, montelukast, etc. to alleviate the symptoms. Unexplained nausea, vomiting, diarrhea, etc., it is recommended to consult a doctor as soon as possible, do not blindly take oral medication.