Bleeding again a year after hemorrhoid surgery may be caused by factors such as dryness of stool and recurrence of hemorrhoids, but it cannot be ruled out that it is due to anal fissure and other lesions. 1. Stool dryness: hemorrhoid patients in the postoperative still do not pay attention to diet, long time to eat too spicy, stimulating food, may make the intestinal water is absorbed, the phenomenon of stool dryness, in defecation is too forceful, easy to lead to the perianal skin is damaged, the phenomenon of bleeding. 2. hemorrhoid recurrence: hemorrhoid surgery after a year and the phenomenon of bleeding, may be due to the operation hemorrhoid nucleus is not completely removed, long-term sedentary, constipation and other factors lead to the recurrence of the disease, so that the phenomenon of bleeding. 3. Anal fissure: usually due to a variety of factors such as narrowing of the anal canal, infection, mechanical trauma, etc., resulting in the formation of small ulcers below the dentate line after the anal canal skin layer cracks, when defecating, it will lead to damage to the mucous membrane of the anus, the phenomenon of bleeding. Hemorrhoid patients bleeding again a year after surgery, may also be related to other factors, based on a symptom alone can not determine the specific cause, it is recommended to go to the hospital anorectal department in time for examination, and under the guidance of the doctor’s diagnosis and treatment, and comply with the doctor’s instructions.