Urine routine occult blood 1 + indicates that the urine occult blood test is weakly positive, there may be a small number of red blood cells in the urine, can be physiological hematuria, but also for the urinary tract infection disease, urinary tract stones and other factors lead to. 1. Physiological hematuria: such as strenuous exercise, female menstrual period menstrual blood mixed into the urine, there will be a positive urinary occult blood, after rest can return to normal. 2. Pathological causes: such as urinary tract infection, urinary tract stones and other diseases caused by common diseases such as urethritis, cystitis, bladder stones and so on. Long time existence of urine occult blood positive, even appeared in the naked eye painless hematuria, should be vigilant for the urinary system tumor, in addition to the whole body coagulation dysfunction can also lead to urine occult blood. It is recommended that patients with positive urinary occult blood should consult the hospital in time to improve the urine routine, renal function, urinary ultrasound, urine erythrocyte phase-contrast morphology and other related examinations, to clarify the cause of the disease under the guidance of the doctor to avoid delays in the condition of the symptomatic treatment.