Routine urine test is the most common test for urinary system diseases, mainly checking the color, pH, red blood cells, white blood cells, protein and sugar characterization of urine. Normally, white blood cells in urine routine are negative or only a small amount. Elevated white blood cells mainly indicate the presence of inflammatory cells in the urine, mostly suggesting upper and lower urinary tract infections. Common lesions include pyelonephritis, cystitis, urethritis, prostatitis, etc. If there are recent urinary stones, the stones may irritate the urinary tract, which may also lead to elevated white blood cells. If there is inflammation of the urinary tract, patients are often accompanied by symptoms of urinary tract irritation, mostly frequent, urgent and painful urination. Patients with severe disease may have systemic symptoms, such as dizziness, nausea, vomiting, and high fever. However, there may be certain abnormal results during routine urine examination. On the one hand, it is recommended to improve the examination, such as urinary ultrasound, etc., and review the routine urine several times, on the other hand, it is necessary to combine the clinical symptoms of the patient to clarify whether there are symptoms of inflammation or infection. In short, the discovery of elevated white blood cells, do not be too nervous, clear diagnosis and then targeted treatment.