Internal hemorrhoids may cause fecal deformity. Internal hemorrhoids are clusters of veins and blood vessels above the dentate line of the anal canal. When internal hemorrhoids are severe, defecation will cause anal pain, change the patient’s defecation habits and the nature of stools, which may make the stools thinner and narrower or discharge thin stools. In addition to deformation of stool, patients may also experience symptoms such as blood in stool, prolapse of internal hemorrhoids, severe pain, anal itching and so on. After discovering internal hemorrhoids, you need to pay attention to your diet, eat more vegetables and drink more water, so that the stool can be relieved by loosening and clearing. If the hemorrhoids have bleeding, prolapse, incarceration or thrombosis need to be timely treatment, can be warm water sitz bath, external compresses, but also can be taken internally to clear heat, laxative drugs. If the symptoms continue to be unable to relieve, you should consult with the hospital in a timely manner.