Positive fecal occult blood first need to carry out relevant examinations such as endoscopy, angiography, CT, etc., to clarify the cause of the disease and then according to the cause of the treatment, physiological causes of the person, usually no treatment; pathological causes such as hemorrhoids, peptic ulcer, etc., usually take medication or surgical treatment. 1. Physiological causes: positive fecal occult blood may also be affected by diet and medication, such as eating animal offal, pig’s blood, iron supplements may cause positive fecal occult blood. In this case, it is recommended to stop eating these foods or medications before reviewing. 2. Pathological causes: consider a variety of causes of gastrointestinal bleeding, including common causes such as peptic ulcer, digestive tract tumors, complications of cirrhosis, esophageal cardia mucosal tear syndrome, gastrointestinal inflammation and infection, vascular abnormalities such as hemorrhoids vascular malformations and so on. It is necessary to go to the hospital to determine the cause of gastrointestinal bleeding, and then further endoscopy such as gastroscopy, colonoscopy, capsule endoscopy; imaging such as ultrasound CT, etc., to clarify the cause of the disease, and then apply medication, endoscopy or surgical treatment. It is recommended that when positive fecal occult blood occurs, consult a doctor promptly, follow the doctor’s instructions for further examination, and choose a reasonable treatment plan under the doctor’s comprehensive analysis.