Whether the blood in stool is bright red and painless can be cured by itself, this situation depends on what the cause of the bleeding is, because the blood in stool is bright red and painless, the most common cause is caused by hemorrhoids and internal hemorrhoids, it should not be anal fissure because anal fissure will show obvious and typical symptoms such as pain. For internal hemorrhoids, if through a series of conservative treatment or regulation of dietary habits, etc., can be cured, for example, you should drink more water, eat more fresh vegetables and fruits, to prevent dry stools, constipation, can not eat spicy food, can not be a large number of alcohol, especially the high degree of alcohol, the internal hemorrhoids can be further eliminated swelling, reduce the hemorrhoidal vein congestion, so that the symptoms can be slowly alleviated, and even internal hemorrhoids can be self-cured,. This kind of bleeding symptoms can also be self-healing. However, painless blood in stool with bright red blood can also be seen in other causes, such as anal canal cancer or low rectal cancer, there will also be blood attached to the surface of the stool, or blood dripping after stool, and the symptoms of internal hemorrhoidal bleeding are similar to and confused with the symptoms of internal hemorrhoidal bleeding, and in this case will not be self-healing. There are also rectal polyps or rectal adenomas, etc., bleeding can also be confused with bleeding from internal hemorrhoids, so these cases must be treated systematically after the primary disease before the bleeding can be relieved, and cannot be cured by itself.