Urinary occult blood (++++) means hematuria. Under normal circumstances, urinary occult blood should be negative, that is, there are no red blood cells in the urine of normal people. If there is occult blood (+++), there are two common situations, 1, there are kidney diseases, common acute glomerulonephritis or chronic glomerulonephritis, etc., this kind of patients in addition to the urine occult blood, patients often may also be combined with the situation of protein in the urine. 2, urine occult blood (+++) is common outside the kidney, such as common urinary tract infections, stones or tumors, this time the patients with urinary tract infections, the patients with urinary tract infections. In addition to urinary occult blood, urinary leukocytes can be seen in patients with urinary tract infections. Urinary stones and or urinary tumors, can be further examined through the urinary tract ultrasound to be perfect.