Routine urine tests in female patients suggest high red blood cells and white blood cells, a phenomenon commonly associated with urinary tract infections. The presence of urinary tract infection causes inflammation in the mucosa of the urinary tract, and the inflammation causes an increase in white blood cells, and causes blood to seep through the mucosa of the urinary tract, resulting in an abnormal increase in red blood cells as well, which is more common in acute cystitis, usually caused by bacterial infection. In female patients, the urethra is shorter and when the immune system is low, it is easy for bacteria to retrograde through the urethra and infect the bladder, causing acute bladder inflammation. The common pathogenic bacteria are mainly Escherichia coli, Aspergillus, Staphylococcus, etc. The main clinical symptoms caused are bladder irritation symptoms of urinary frequency, urinary urgency and pain, for which patients generally need active treatment. Most patients with urinary tract infections can be cured through standardized treatment with antibiotics.