Sudden vomiting and diarrhea are first considered to be acute gastroenteritis. This disease usually has obvious triggers, you can recall if you ate anything inappropriate before the onset of the disease. If medication is used, it is recommended to take the following orally: first, acid suppressants, such as the common rabeprazole, omeprazole, etc. Second, drugs that protect the gastrointestinal mucosa, such as glutamine. Third, drugs that regulate the dynamics of the gastrointestinal tract and also relieve the spasm of the gastrointestinal tract, such as trimethoprim. Fourth, you can use drugs that regulate intestinal flora, such as Bacillus Enterococcus subtilis, Lactobacillus complex, Bifidobacterium bifidum, etc. If there are symptoms of fever, you can add levofloxacin, a drug that is prohibited for people under 18 years old because it can inhibit bone development. If the number of stools is relatively high, you can also add montelukast, which can play a role in stopping diarrhea; if the number of vomiting and diarrhea is particularly high and frequent, you must pay attention to never appear dehydration and electrolyte disorders, and at this time you need to go to the hospital immediately and seek treatment from a professional doctor. In addition, Chinese medicine is also very effective for acute gastroenteritis.