The causes of frequent diarrhea are both physiological and pathological. Physiological causes include irregular diet, eating cold food, etc. Pathological causes include irritable bowel syndrome, functional dyspepsia, ulcerative colitis, intestinal masses, etc. 1. Physiological causes: such as irregular diet, eating cold food, etc. can lead to gastrointestinal digestion and peristaltic function abnormalities, thus triggering diarrhea. Generally, it can be adjusted to normal. 2. Pathological causes: such as irritable bowel syndrome with mood changes, exhaust or defecation symptoms can be alleviated; such as functional dyspepsia can also have belching (hiccups), loss of appetite and other symptoms; such as ulcerative colitis can also have abdominal pain, abdominal distension, mucus pus and blood and other symptoms; such as intestinal masses can also have blood in the stool, fatigue and other symptoms. For the cause of frequent diarrhea, it is recommended to consult a doctor for clarification.