Frequent diarrhea may be caused by physiological factors such as eating cold and greasy food, or it may be caused by diseases such as acute gastroenteritis and irritable bowel syndrome. 1. Physiological factors: usually the patient’s diet is poor, often eat cold, greasy, spicy and stimulating food, the gastrointestinal mucosa caused by stimulation, often induced frequent diarrhea, is a normal physiological phenomenon. 2. Acute gastroenteritis: mainly due to pathogenic microbial infections, but also with the intake of toxic plants, chemical toxins, intestinal irritant drugs, seafood allergies and other factors. Dietary impurity, low immunity, etc., can also induce acute gastroenteritis. Usually infectious acute gastroenteritis patients often appear abdominal pain, diarrhea, nausea, vomiting and other symptoms, stools are mostly dilute watery, up to 10 times a day, which can also be manifested as frequent diarrhea. 3. Irritable Bowel Syndrome (IBS): The cause and mechanism of IBS are not clear, and it is mostly considered to be related to intestinal infections, neurological abnormalities, intestinal micro-ecological imbalance, and visceral hypersensitivity, etc. Patients often have abdominal pain, diarrhea, nausea and vomiting. Patients often have abdominal pain, diarrhea, constipation and other symptoms, and diarrhea can be manifested as persistent or intermittent, mostly in the morning or after meals, thus frequent diarrhea can also occur. In addition to the above, it may also be caused by food poisoning, amoebic enteropathy, etc. Patients need to be clearly diagnosed and treated.