The indicator of leukocytes in urine routine is under 5 per high magnification field of view. Under normal circumstances, a small number of leukocytes can also be found in the urine, but the amount is relatively small, mainly by applying microscopic observation, under 5 per high power microscope field of view, if more than 5, it is an abnormality, known as leukocyturia. Elevated leukocytes in the urine, the most common is urinary tract infection, such as acute cystitis, acute pyelonephritis, the patient in addition to the presence of leukocytes in the urine, it will be accompanied by urinary frequency, urgency, urinary pain, lumbago, fever and other symptoms. If only the first three symptoms, consider acute cystitis. If the last two symptoms, consider acute pyelonephritis. Urinary tract infections need to be treated with antibiotics to fight infection, and at the same time, it is important to drink plenty of water and urinate regularly. After anti-infection treatment, most patients can be cured.