Flat stools are usually abnormal. Once you find yourself with abnormal bowel movements, you should go to the gastroenterology department of a hospital in time to clarify the cause and then carry out symptomatic treatment. The normal human intestine and anus are hollow and cylindrical, so the stool should normally be cylindrical, similar to a banana. The first clinical consideration is hemorrhoids, when the internal hemorrhoid nucleus is large, the stool will be deformed by the extrusion of the nucleus, can be clearly diagnosed through finger diagnosis and anoscopy, and in serious cases need to take surgery to remove the treatment. Secondly, when there are colon masses, tumors and other occupying lesions, the intestinal tube content is reduced, and the stool can also appear in a flat shape, and may be accompanied by changes in bowel habits, such as an increase in the number of stools and a feeling of urgency, etc. Pathological examination is needed to make a clear diagnosis. In daily life, we should develop good habits, regular rest and rest, ensure enough sleep time, keep a happy mood, and avoid spicy, stimulating and greasy food in order to reduce the burden on the gastrointestinal tract.