The anal pain after stool for a long time need to be treated according to different causes, such as hemorrhoids can be relieved with hemorrhoid cream and other drugs, anal fissure can be taken orally to soften the stool, local inflammation of the anus can be treated with potassium permanganate solution bath. 1. hemorrhoids: due to internal hemorrhoids embedded, external hemorrhoids rupture can cause anal pain after bowel movement, mild symptoms can be used to relieve symptoms of hemorrhoidal cream, serious patients need surgical resection or stripping and other treatments. 2. anal fissure: due to constipation, diarrhea, trauma and other factors, when defecation due to anal fissure lesions in the nerve endings are stimulated, you will feel anal burning or cutting pain, local can be coated with bupivacaine gel and other medications, oral pills to soften stools. 3. Local inflammation of the anus: due to the anus is not timely cleaning easy to breed bacteria, long time can cause ulceration lead to pain, this situation can use potassium permanganate solution sitz bath, local rub erythromycin ointment treatment, keep local hygiene and dryness during the treatment period, prohibit spicy and stimulating food. After the anal pain for a long time, it is recommended to go to the regular hospital, clear cause targeted treatment, do not use drugs to avoid causing adverse effects. The above medication is only for reference, the specific treatment of drugs need to be used under the diagnosis and treatment of a doctor.