Stool routine can detect gastroenteritis, dysentery, colitis and other diseases. 1. Gastroenteritis: when the patient’s intestines or stomach are infected by bacteria, viruses, parasites and other infections caused by gastroenteritis, you can check whether there are elevated white blood cells, parasites, and so on, and combined with the patient’s clinical manifestations to judge, you can diagnose whether you are suffering from gastroenteritis. 2. Dysentery: It is a kind of intestinal inflammatory infectious disease caused by Shigella infection, which can easily lead to diarrhea, chills, high fever and other uncomfortable symptoms. Mucus stools, pus and blood stools can be observed during routine fecal examination. Fecal microscopy can detect a large number of white blood cells, red blood cells. 3. Colitis: Colitis is a chronic inflammatory bowel disease, which easily leads to diarrhea, abdominal pain, bloody stools and other symptoms. Mucus, pus and blood can be observed during routine fecal examination. Microscopically, pus cells, leukocytes, and phagocytes may be observed if in the acute phase of colitis. Patients with abnormal stools should undergo routine fecal examination under the guidance of a doctor to clarify the cause of the disease and then treat it.