Bleeding stools are not necessarily due to hemorrhoids, but may also be caused by other diseases, depending on the cause. Bleeding stools caused by hemorrhoids are mostly bright red and can be aggravated by constipation, drinking alcohol or eating irritating food. The pain is usually not painful for simple internal hemorrhoids, but only when combined with thrombosis and infection; external hemorrhoids usually have no special symptoms, but can become swollen and painful when thrombosis and inflammation occur. In addition, other causes can also cause bleeding in the stool, such as eating barbecue, spicy and stimulating food, drinking less water, resulting in too little water in the intestine, causing the stool to be too dry and hard, which can cut through the intestinal mucosa when expelled, or cause anal fissures, which can cause bleeding in the stool. The specific cause of bleeding should be determined by the nature, color and amount of bleeding. If necessary, rectal examination, anoscopy or colonoscopy should be performed to clarify the site and cause of bleeding. Patients should avoid sitting and standing for a long time, eat more vegetables and fruits with coarse fiber, avoid spicy and stimulating foods, quit smoking and drinking, and develop regular bowel habits to avoid constipation.