Bleeding stools can be registered with either gastroenterology or gastrointestinal surgery, because bleeding stools depend on whether it is bright red blood or black stools. If there is black stool or tarry stool, it is considered to be caused by bleeding in the upper gastrointestinal tract, so you can call the gastroenterology department. Gastroscopy can be done in the gastroenterology department to find out which part of the body is bleeding, so that timely treatment can be sought to avoid delays. If the stool is bright red blood, call the gastroenterology department. Gastrointestinal surgery considers intestinal problems, such as colon tumors, polyps, colitis or hemorrhoids that cause bleeding in the stool. Therefore, it is important to register for targeted treatment and deal with it in a timely manner.