A positive fecal occult blood test is considered to be the result of gastrointestinal bleeding, which can also be caused by bleeding from the biliary tract and the pancreatic duct. For upper gastrointestinal bleeding, gastroduodenoscopy should be completed, and for lower gastrointestinal bleeding, colonoscopy should be completed to clearly diagnose the specific cause. In addition to positive fecal occult blood, the general combination of gastrointestinal symptoms, which can be abdominal pain, bloating, acid reflux, heartburn, nausea, vomiting, chills, fever and other conditions, combined with the specific situation, analysis of the specific condition, depending on the condition, further treatment.