Prostatic vesicle excretory protein refers to the protein secreted by the lecithin vesicles contained in the prostate fluid. The normal value of prostate excretory protein in normal men is <1.2ng/ml, and a mild increase is seen in the elderly, which is a physiologic change. Pathological state of elevation is mainly caused by prostate inflammation caused by the lecithin vesicle secretion, lecithin vesicle has a certain antioxidant, antibacterial function. If the patient in the regular hospital check out the prostate excretion protein abnormalities, combined with the patient's clinical manifestations, basically can diagnose prostatitis. It is recommended to drink more water, urinate more, eat less spicy and stimulating food, quit smoking, quit drinking, and refrain from sexual life.