In clinical practice, we often encounter patients who ask us the question, “Can hemorrhoids become cancerous? Patients who have blood in their stool are usually very nervous. Usually, patients with hemorrhoids have blood in their stool, and once they have blood in their stool, they will come to the hospital for treatment. It is up to the doctor to give the patient a satisfactory answer based on his clinical experience. There are two major manifestations of hemorrhoids: one is that they prolapse outside the anus during defecation, or in some cases, they grow outside the anus. The other symptom is blood in the stool. There is an area in the lower part of the anus where hemorrhoids occur, and the blood supply to the tissues in this location has a characteristic that the arteries are connected, so that when hemorrhoids bleed it must be bright red blood from the arteries. The amount of blood is related to the size of the hemorrhoid, the state of prolapse, and the state of the local hemorrhoid mucosa, so hemorrhoids can bleed in different ways, such as blood on paper, blood attached to the stool mass, dripping blood, and jet bleeding. The bleeding stops as the hemorrhoid retracts into the anus, and only occurs during defecation. The bleeding can also stop on its own after the eroded mucosa has healed, so that hemorrhoid bleeding can be intermittent and intermittent in character, and sometimes heal without treatment. In addition, bleeding hemorrhoids are related to dietary habits and seasonality. The bleeding of such hemorrhoids will have the following characteristics: bright red color, bleeding volume can be large or small, occurring only during bowel movements, and intermittent bleeding that can stop without treatment, etc.