If the blood is in the urine, it is not visible to the naked eye and can only be detected with the help of routine urine tests. There are many reasons for this condition, such as sports-related hematuria after strenuous exercise and the use of certain drugs, which usually do not require clinical intervention. If it is a urinary tract disease, such as urinary stones or acute infection of the urinary tract, further ultrasound examination of the urinary tract should be performed in the hospital, and then further treatment should be given for the cause. If the occult blood is in the feces, also called fecal occult blood positive, it is usually considered gastrointestinal bleeding, this situation is recommended to go to the hospital gastroenterology department for further clarification, if it is gastrointestinal bleeding and other conditions, it is recommended to actively hospitalized treatment.