Urine protein negative, urinary occult blood 2 + suggests the existence of hematuria but no proteinuria, usually seen in physiological factors, such as strenuous exercise, etc.; pathologic factors such as urinary tract infections, urinary stones and other diseases. 1. physiological factors: urine protein negative, urinary occult blood 2 + can be seen after strenuous exercise, or women during menstruation to take urine specimens resulting in specimen contamination, usually in the removal of triggers can be improved. 2. Pathological factors: urine protein negative, urinary occult blood 2 + is usually seen in the urinary system infection, urinary stones, urinary system tumors and trauma, etc.; In addition, can also be seen in thrombocytopenic purpura, lupus nephritis, nephrotic syndrome and other diseases. If you find abnormal urine test, it is recommended that patients go to a regular hospital in time, complete the relevant examinations as prescribed by the doctor, and follow the doctor’s instructions to standardize the treatment, so as not to delay the condition.