Whether female urinary occult blood (+++) is serious or not depends on the cause of the occult blood in urine.1. If the occult blood in urine is caused by urinary tract infection, most patients can be completely cured after active anti-infection treatment, so it’s not very serious.2. If the occult blood in urine is caused by urinary stones, it can be taken out through the laser or surgical method, so it’s also not very serious.3. If the occult blood in urine is caused by urinary tumor, it is more serious if it is malignant tumor, which may affect the patient’s life span.4. If the occult blood in urine is caused by renal disease, such as glomerulonephritis, it is relatively mild if it is simple occult blood in urine without the combination of proteinuria, high blood pressure or renal function impairment. But on the contrary, if there is a combination of large amount of proteinuria and hypertension, or renal failure, the condition is relatively serious.