Leukocytes (++++) means that there is a significant increase in the number of leukocytes in the specimen tested, which often represents the occurrence of inflammation at the site from which the material was taken. For example, if leukocytes (++++) are found in the routine urine examination, it indicates the presence of urinary tract infection, commonly seen in acute pyelonephritis, cystitis, prostatitis, urethritis, etc. The patient may have a series of symptoms such as urinary urgency, frequency, painful urination and back pain. If it is the presence of white blood cells (++++) in the stool examination, it often represents a condition of acute infection in the intestine, such as acute enteritis, etc. The patient may be accompanied by a series of symptoms such as abdominal pain and diarrhea. If it is the presence of leukocytes (++++) in the prostate fluid examination, it can be diagnosed as the presence of prostatitis, which indicates the infection of certain bacteria in the prostate and often requires the administration of sensitive antibacterial medication.