Positive fecal occult blood may be caused by dietary factors, bleeding hemorrhoids, upper gastrointestinal bleeding, and intestinal diseases. 1. Dietary factors: If you have recently eaten too much animal blood or blood-processed related foods, it may lead to fecal occult blood. 2. Hemorrhoidal bleeding: Hemorrhoidal patients may experience a small amount of bleeding during defecation, and a small amount of hemoglobin can often be detected positively. 3. Upper gastrointestinal bleeding: most common in gastric ulcer, duodenal ulcer, usually in the ulcer attack, it is easy to lead to upper gastrointestinal bleeding, part of the hemoglobin into the stool, resulting in a positive fecal occult blood. 4. Intestinal diseases: such as ulcerative colitis, intestinal cancer, etc., may lead to positive fecal occult blood. Positive fecal occult blood does not need special treatment if it is caused by dietary factors, but if it is caused by diseases, you need to cooperate with doctors to take treatment.