There is still a small amount of blood 28 days after hemorrhoid surgery, which may be related to wound bleeding, colorectal polyps, colorectal tumors, colorectal inflammation, and coagulation disorders. 1. Wound bleeding: hemorrhoid surgery 28 days after the wound is not completely healed, during this period if there is a dry stool, dry stool will stimulate the wound caused by wound bleeding. 2. Colorectal polyps: if the patient with colorectal polyps, after 28 days of surgery, if various reasons lead to polyp surface mucosal breakage bleeding, can also appear blood in the stool. 3. Colorectal tumor: patients in addition to hemorrhoids, there are colorectal tumors, hemorrhoids surgery 28 days after the situation can also appear blood in the stool. 4. Colorectal inflammation: patients with colorectal inflammation, the mucosa of the colorectum will have pathological changes of congestion, edema, in the case of dry stools, can also lead to blood in the stool. So a small amount of blood in the stool can also occur 28 days after hemorrhoid surgery. 5. Coagulation dysfunction diseases: such as hemophilia, vitamin K deficiency, etc., so that the wound is not healed, the wound can continue to exist a little blood seepage. It is recommended that the patient should return to the hospital in time for a review to clarify the cause of the bleeding, and be treated by a professional doctor to avoid aggravation of the condition.