Occult blood 1+ is not serious, sometimes it is a small amount of gastrointestinal bleeding, such as bleeding from a gastric ulcer or a duodenal ulcer, or inflammation of the rectum, there will be a small amount of blood leakage, at this time there will be occult blood 1+. Some patients may have internal hemorrhoids, and a small amount of bleeding from internal hemorrhoids along with constipation may also result in occult blood 1+. Because there are more diseases that cause this condition, but if the patient has no other obvious symptoms of the digestive tract, regular observation is sufficient. However, if the patient is older than 45 years old and also has irregular bowel movements and abdominal pain before stool, it is recommended that the patient undergo a gastrointestinal endoscopy, such as gastroscopy or colonoscopy, to clarify whether there is an occupying lesion.