Urine occult blood 3 + if physiological factors such as strenuous activities, late at night, etc., generally not serious; if pathological factors such as urinary tract infections, urinary stones, urinary system tumors, glomerulonephritis and other diseases, generally more serious, need to actively give targeted treatment. Urine occult blood 3 + refers to the number of red blood cells in the urine routine, is a positive result. To determine whether urinary occult blood 3 + is very serious, need to be based on the actual condition, can not be generalized. Physiological factors such as strenuous activities, late at night, emotional tension, etc., generally not serious, pay attention to rest, regular review can be. Pathological factors such as urinary tract infections, urinary stones, urinary tract tumors, glomerulonephritis, polycystic kidney and other diseases, generally more serious, need to actively give targeted treatment. It is recommended that patients with 3+ occult blood in urine should go to a regular hospital in time, cooperate with the doctor to complete a series of other related examinations, and then follow the doctor’s instructions to actively treat the original disease.