The causes of urinary occult blood 3+ are physiological and pathological, the former is caused by strenuous exercise, most of which can be improved after rest, without special treatment; the latter needs to be treated, such as urinary tract infections require the use of antibiotics, renal calculi may require extracorporeal lithotripsy, ureteroscopy, etc., acute and chronic nephritis need to lower urinary protein, immunosuppressive therapy. Physiological causes, such as strenuous exercise, fever and other causes of urinary occult blood, without special treatment, pay attention to rest, physical recovery of urinary occult blood can generally disappear on their own. Pathologic causes are more common, such as urinary tract infections, stones, acute and chronic nephritis. Urinary tract infection, urinary stones caused by positive occult blood, need to apply antibiotics for treatment, more commonly used are levofloxacin, cefuroxime, etc., need to be applied under the guidance of a physician. Patients with stones may also need extracorporeal lithotripsy, ureteroscopic surgery, etc., depending on the size and location of the stones. Acute and chronic nephritis resulting in occult blood requires antihypertensive, urinary protein-lowering, or even immunosuppressive treatment depending on the patient’s other conditions, such as the presence or absence of urinary protein, hypertension, edema, and so on. Commonly used drugs such as valsartan, Benadryl, prednisone acetate, cyclophosphamide and so on. Urinary occult blood 3 + is recommended to timely to the regular hospital, identify the cause, under the guidance of the physician for standardized treatment. The above medication should be used in accordance with the doctor’s instructions, and should not be used without authorization, so as not to aggravate the condition.