The common clinical causes of diarrhea and vomiting are acute gastroenteritis, intestinal flora imbalance, irritable bowel syndrome, and eating spicy and irritating foods. 1. Acute gastroenteritis: the disease refers to acute inflammation of the gastrointestinal mucosa due to various reasons, usually associated with cold or irritating food, eating unclean and other factors, which is common in children, clinical manifestations of nausea, vomiting, diarrhea and so on. 2. Imbalance of intestinal flora: this condition refers to the syndrome of gastrointestinal symptoms caused by the imbalance of intestinal flora, and its common causes include excessive use of antibiotics, intestinal infections, etc. Its clinical manifestations include abdominal distension, abdominal pain, constipation or diarrhea. 3. Irritable bowel syndrome: the etiology and mechanism of this disease have not yet been clarified, and studies have shown that diet, heredity, intestinal infections and other factors are often its triggers, and the main clinical symptoms include abdominal pain, bowel movement abnormalities, etc., and the related symptoms are chronic, intermittent and recurrent. 4. Dietary history of eating spicy and stimulating foods: some people’s own gastrointestinal tract is intolerant of spicy and stimulating foods, such as chili peppers and peppers, etc. All of the above foods will stimulate the mucosa of gastrointestinal tract and cause abdominal pain, diarrhea, vomiting and other symptoms. If the symptoms of gastrointestinal discomfort are more serious, it is recommended to go to the hospital to improve the relevant examination for targeted treatment.