Urinary occult blood 1+ usually indicates the presence of hemoglobin in the urine. It can be caused by physiologic and pathologic factors. Physiological factors such as strenuous exercise, overwork, etc. can appear urine occult blood 1 +, usually without treatment, after appropriate rest, can return to normal. Pathological factors can be seen in the urinary system diseases such as glomerulonephritis, urinary stones, urinary tract tumors, etc., can appear positive urinary occult blood, this time need to be combined with other tests, such as urine routine, urinary ultrasound, renal function tests, etc.; hematological disorders, such as thrombocytopenic purpura, etc.; infectious diseases. It is recommended that patients with abnormal urinary occult blood should go to the hospital in time, complete the relevant examinations under the guidance of the doctor to clarify the cause, if it is caused by pathological factors, it should be actively treated to avoid the development of the condition.