The cause of prostate hyperplasia is still unclear, may be related to old age, sex hormones and many other factors, should go to the hospital in time for examination, to clarify the cause of the disease, standardized treatment. 1 old age: prostate hyperplasia is mostly seen in the elderly, with age the incidence of hyperplasia is higher, there may be frequent urination, urinary urgency, urinary pain and other symptoms, symptoms are more pronounced around the age of 60. 2. Sex hormones: affected by hormones, prostate mesenchymal cells and glandular epithelial cells interact with each other, with age, the body’s sex hormones are out of balance, which in turn acts on prostate cells, affecting their growth, proliferation and apoptosis. 3. Other: recent studies have found that smoking, obesity and alcoholism, family history, ethnicity and geography may also have a certain impact on the occurrence of prostate enlargement. Prostate hyperplasia may have other reasons, patients should immediately go to the regular hospital, under the guidance of the doctor standardized treatment, and strive for early recovery.