Diarrhea is a relatively common disease in life, and frequent episodes of diarrhea are not only painful, but also seriously affect life and work. The causes of diarrhea are complex and can be associated with a variety of causes. It is mainly divided into infectious and non-infectious factors. The most common ones are infectious, such as unhygienic diet or consumption of spoiled food that can easily induce bacterial or viral infections, and if long-term infections are not effectively treated, diarrhea can occur frequently. In addition, some inflammatory diseases of the intestinal tract, such as ulcerative colitis, Crohn’s disease, intestinal tuberculosis, or some tumors of the small intestine, mesenchymal tumors, etc. can cause frequent diarrhea. People may ignore the seriousness of frequent diarrhea in their life, which may result in serious consequences. If frequent diarrhea is frequent, it is important to conduct necessary examinations in time to discharge other organ problems so as not to ignore other diseases. In addition, some non-infectious factors such as working in a low temperature environment often, the body is cold for a long time, leading to disorders of gastrointestinal function, gastrointestinal peristalsis accelerated, causing diarrhea. There are also some people with special constitution that can cause diarrhea due to poor congenital gastrointestinal function. The causes of frequent diarrhea are diverse and require careful identification and comprehensive diagnosis in clinical practice. Frequent diarrhea can indicate some other parts of the problem, so it is important to pay attention to it, identify the cause in time, and carry out symptomatic treatment.