Urine leukocytes + in urine test suggests the possibility of false positives, urinary tract infection, bladder disease and interstitial nephritis, etc., which need to be further examined for a definitive diagnosis. 1. False-positive: If the vaginal secretion is contaminated, it may lead to false-positive results, so it is recommended that the examinee review the test again to rule out the possibility of false-positive. 2. Urinary tract infection: Urinary tract infection can lead to pathogenic bacteria in the urine, once phagocytosed by leukocytes, it will cause a rise in the number of leukocytes in the urine test, which can easily induce frequent urination, urinary urgency, cloudy urine and painful urination, accompanied by lumbar pain and fever, which requires further anti-infective treatment. 3. Bladder diseases: such as bladder tumors or bladder mucosal lesions, which can cause elevated leukocytes in the urine sediment, and need to receive urethrocystic mucosal electrolysis treatment or tumor electrolysis treatment. 4. Interstitial nephritis: interstitial nephritis can appear positive urine leukocytes, no symptoms of urinary frequency, urgency, urinary pain, and urine culture is mostly negative. Therefore, it is recommended that patients with urine leukocytes + urine test, it is necessary to actively go to the regular hospital to receive examination and treatment, to avoid aggravation of the condition, endangering health.