Causes of gastroenteritis (gastroenteritis) include non-infectious gastroenteritis such as food irritation and infectious gastroenteritis such as bacterial, viral and parasitic infections. 1. Non-infectious gastroenteritis: consuming cold, spicy and other irritating foods, drinking alcohol and other stimulation of the gastric mucosa; long-term late night, no exercise and other bad habits can lead to a decline in immunity; taking antibiotics, such as amoxicillin, leading to dysfunction of the gastrointestinal flora in the gastrointestinal tract, an increase in the number of harmful bacteria, the production of toxins increased, destroying the mucosa of the stomach and intestines; taking non-steroidal anti-inflammatory drugs, such as aspirin, indomethacin and so on, to stimulate the mucosa of the stomach, all will cause gastroenteritis. 2. Infectious gastroenteritis: Eating or drinking food or water contaminated by bacteria, viruses, parasites, etc. Common pathogenic bacteria include: Escherichia coli, Salmonella, Vibrio parahaemolyticus, rotavirus, norovirus, etc., which leads to infection of the mucosa of the gastrointestinal tract and the influence of the normal bacterial flora, resulting in gastroenteritis. Daily life to eat a light diet, do not eat overnight food, try not to eat raw seafood, meat and other foods. Early to bed, early to rise, regular exercise to develop good habits. If you have gastroenteritis, you should go to the hospital in time, clarify the cause of the disease, and follow the doctor’s instructions to choose the treatment program.