Acute diarrhea and chronic diarrhea are generally distinguished from each other in three ways: the duration of diarrhea, the specific etiology, and the specific manifestations. Acute diarrhea occurs acutely within 2 weeks, and most of the causes are infectious, such as eating unhygienic food, or after the use of broad-spectrum antibiotics, the intestinal flora becomes dysbiosis, resulting in diarrhea in the near future, with abdominal pain and an increase in the number of stools. In the case of bacterial dysentery diarrhea, there will be pus and blood stools, and even fever, nausea and vomiting. Chronic diarrhea is generally defined as diarrhea that is more than 2 months old and is further divided into two cases: infectious and non-infectious. Infections are relatively rare because people are now more health conscious and will seek medical attention in a timely manner. Specific diseases such as intestinal tuberculosis can also produce chronic diarrhea, with increased stool frequency. As for non-infectious diarrhea, functional diarrhea, irritable bowel syndrome, inflammatory bowel disease, which in turn includes ulcerative colitis, Crohn’s disease, etc., belong to chronic diarrhea. Secondly, patients with multiple polyps in the colon also experience increased stool frequency, which is a chronic diarrhea. However, patients think that there is no serious problem and do not seek medical consultation in time, and come after a delay. Colon tumors can also have recent diarrhea, such as chronic diarrhea when there is a change in the number of stools for 2-3 months, but there is no discomfort in other aspects and no timely consultation.