Flat stools are associated with chronic enteritis, hemorrhoids, intestinal tumors, and other factors. If you find flattened stools during defecation, it is mainly considered to be related to chronic enteritis, gastrointestinal tract dysfunction, and spleen and stomach disorders. After food intake, the intestines are unable to absorb the water inside the stool, which can lead to thin stools or flattened stools, resulting in more frequent, unformed, sticky stools, loss of appetite, and poor bowel movements. The thinning of the stool is considered to be caused by hemorrhoids, especially when the patient has an internal hemorrhoid attack, due to local swelling will lead to narrowing of the intestinal cavity, which will affect the shape of the stool. If the patient has anal papilloma or intestinal tumor, with the gradual increase of the tumor, resulting in poor bowel discharge or flattened stool, you can go to the anorectal department of the hospital and have a colonoscopy to confirm the diagnosis.