Female urinary occult blood (25+) refers to the blood content in the urine exceeds the standard, quantitative examination of the number of red blood cells in the urine 25, which is caused by a number of reasons, such as the presence of infection in the urinary system, stones, can lead to the number of red blood cells in the urine increased. The presence of urinary tract tumors in elderly patients can also cause an increase in the number of red blood cells, which needs to be further combined with the results of other tests, and ultrasound examination of the urinary system to rule out the presence of infection or urinary tract stones, tumors and other diseases. The above diseases can cause local mucosal destruction and cause mucosal bleeding, or cause mucosal congestion, edema and other changes caused by bleeding, then retain the relevant urine examination, there can be a positive qualitative urine occult blood test, quantitative examination of the specific red blood cell value changes. Further urine sediment examination can also be carried out, which is more accurate than the ordinary urine routine examination, and has more guiding opinions for clinicians.