Urine occult blood weak positive can be seen in physiological factors such as strenuous exercise and other conditions usually does not matter, such as in pathological factors such as acute and chronic glomerulonephritis, nephrotic syndrome, IgA nephropathy and other diseases is relatively important, need to pay attention to and consult a doctor in a timely manner. 1. Physiological factors: common in strenuous exercise, female menstrual period specimen contamination, etc., when these factors are removed, usually return to normal, generally does not matter. 2. Pathological factors: common in acute and chronic glomerulonephritis, nephrotic syndrome, IgA nephropathy, ureteral stones, renal tumors, acute pyelonephritis, leukemia, systemic lupus erythematosus, idiopathic thrombocytopenic purpura and other diseases, the condition is more serious, generally relatively important, it is recommended that timely access to medical treatment, comply with the doctor’s instructions standardized diagnosis and treatment. If the patient simply urine occult blood weak positive, generally do not have to worry about, regular review can be; if at the same time other indicators of abnormality, it is recommended to timely hospital consultation, standardized treatment in accordance with the doctor’s instructions, so as to avoid delaying the condition.