Urine occult blood weak positive is definitely due to physical disease: 1, consider is due to urinary tract stones, this situation patients will also be accompanied by renal colic and lumbar pain, it is best to go to the hospital to do ultrasound or CT examination to confirm the diagnosis, can be through the lithotripsy surgery or laser lithotripsy and other ways of treatment. 2, patients with urinary tract infections will also appear urinary occult blood weak positive, the patient will also appear urinary frequency, pain, urgency, and white blood cells in urine is positive. The urine leukocytes are also positive, which can be treated with antibiotics.3. Tumors in the urinary system cannot be ruled out, which should be examined in detail to confirm the diagnosis, and the patient can be treated with surgery, radiotherapy or chemotherapy. There are many reasons for weak positive urinary occult blood, should do more detailed examination and diagnosis, symptomatic treatment.