There are many reasons for stool bleeding, but the most common ones with blood but no pain are mainly bleeding from hemorrhoids, as well as rectal and colon bleeding. 1, if it is hemorrhoids, internal hemorrhoids bleeding is generally painless, bleeding is bright red, dripping after the stool, with dry stool and strain, usually pay attention to drink more water, eat more fruits and vegetables, keep the stool open, sit in the bath with warm water, avoid eating spicy and stimulating food, regular life, do not be too strenuous. 2, painless blood in stool is also the clinical manifestation of rectal polyps, mostly seen in young adults, the amount of bleeding in the stool of polyps is relatively small, but if the stool is very dry and the polyps are extruded and fall off during defecation, more bleeding can occur, the blood in the stool is characterized by blood in the stool, not dripping blood, when the polyps are large or in large quantity, it can be complicated by rectal prolapse. Rectal cancer blood in stool is bloody mucus mixed with stool or attached to the surface of stool, mostly mucus-purulent blood stool, often accompanied by abdominal pain, if it is low, there is a feeling of anal cramping or a feeling of incomplete stool, mostly accompanied by wasting. If you find blood in the stool, you should go to the anorectal department of the hospital in time to do a routine stool and colonoscopy to determine the cause, and then the right treatment.