Urine leukocytes 15 in most cases indicate the presence of a urinary tract infection, and are sometimes seen in acute interstitial nephritis. Normally, the number of leukocytes in urine is relatively small, less than 5 per high magnification field of view, if more than 5 is called urine leukocyte positive. Urine leukocytosis is most often seen in urinary tract infections, due to bacterial infection of the urinary tract, local inflammation, the body in order to fight this inflammation, will prompt the white blood cells to the urinary tract to gather, in the urine routine can be detected in the white blood cells increased. This disease in addition to urine routine can be found in the white blood cell increase, usually accompanied by frequent urination, urinary urgency, urinary pain and other symptoms, the application of antibiotic treatment after the effect is relatively good. There is also a positive urine leukocytes can cause acute interstitial nephritis, after the inflammation of the interstitial part of the kidney, some leukocytes penetrate into the urine through the renal tubules, and can be detected in routine urine leukocyte elevation, which is usually accompanied by low back pain, fever, skin rashes and other corresponding symptoms, and this disease needs to be applied to the treatment of hormones and anti-allergic drugs.