Diarrhea after drinking Puerh ripe tea may be caused by tea irritation, gastroenteritis and intestinal flora imbalance. 1. Tea irritation: It is possible that the tea causes irritation to the stomach and intestines, or patients who drink Puerh ripe tea for the first time do not pay attention to the concentration of the tea, which may lead to the phenomenon of diarrhea. 2. Gastroenteritis: gastrointestinal infections caused by improper diet, viruses, fungi and parasites can lead to diarrhea after drinking Puerh ripe tea. 3. Intestinal flora imbalance: it may be due to dietary habits, medication factors, etc., leading to intestinal flora imbalance, which may lead to the symptoms of diarrhea after drinking Pu-erh ripe tea, accompanied by abdominal distension, abdominal pain and other manifestations. When patients have diarrhea after drinking Pu-erh ripe tea, accompanied by other discomforts, it is recommended to go to the gastroenterology department of the hospital in time.