The prostate is the largest accessory gland of the male reproductive system and has both internal and external secretory functions. It is a substantial organ composed of glandular and fibromuscular tissues, firm and elastic, with an envelope on the surface. The size and shape is inverted chestnut, with the base up and the tip down, weighing 8-20g. The prostate gland secretes a milky white weakly acidic (pH 6.3-6.5) slurry rich in acid phosphatase, fibrinolytic enzymes and zinc, with the peculiar odor of chestnut or heather flowers (due to the oxidation of arginine), which constitutes the semen component. The prostate is also a sexually sensitive area that can trigger sexual arousal when properly stimulated. The prostate is located deep in the pelvis, between the lower part of the bladder neck and the urogenital diaphragm, wrapping around the beginning of the posterior urethra, behind the rectocele, and in front connected to the pubic bone by the pubic prostatic ligament. The gland has fat and loose connective tissue on the anterior side and is lined by the prostatic venous plexus. The glandular parenchyma contains 30-50 complex vesicular glands with 15-30 ducts opening on either side of the seminal caruncle in the posterior wall of the urethra. The secretory part of the gland is composed of a single layer of cuboidal, single layer of columnar and pseudostratified columnar epithelium, and the glandular lumen is extremely irregular. The lumen can be seen as a concentration of secretions forming round eosinophilic lamellar vesicles called prostaticconcretion, which can become more numerous with age and even calcify into prostatic calculi. The prostate gland is divided into five lobes, namely the anterior lobe anterior, middle lobe median, posterior lobe posterior and both lobes lateral, according to Lowsley (1912), based on the characteristics of embryogenesis and the original structure of the gland. The lobe of both sides is equivalent to the peripheral area of the prostate and contains the most ducts. The middle lobe of the prostate is embedded between the two lobes, from which the seminal caruncle develops. The posterior lobe forms the apical part of the prostate, which can be palpated by rectal examination. However, it is difficult to find a clear boundary between the lobes on the specimen and is of little clinical use. Franks (1954) divided the prostate into endoglandular, mesoglandular and ectoglandular zones based on the histological characteristics of the gland surrounding the urethra in a cross-section of the prostate, with the urethra as the center. The inner zone (urethral mucosal gland group) is located around the urethra and has a short, simple structure with an opening around the urethra; the middle zone (urethral submucosal gland group) is located in the peripheral part of the glandular tissue around the urethra; the outer zone (main prostate gland group), also called the intrinsic prostate, occupies the largest position and is the main part of the prostate, consisting of long branching vesicles. The Franks zoning method is simple and practical and has been widely used by scholars at home and abroad for many years. McNeal (1968, 1981) proposed a new concept of prostate lobulation based on the morphology, physiological function and pathological view of the prostate, which is divided into glandular and non-glandular areas, which has been accepted by more clinical workers in recent years. The glandular area includes: the migratory area. It is the part of the urethra that surrounds the proximal urethra to the opening of the ejaculatory duct, with fine and dense glandular branches and dense epithelial cells. Central zone (central zone). It is the part surrounding the posterior part of the proximal urethra where the ejaculatory duct passes through the opening of the seminal caruncle. Peripheral zone. The peripheral zone, which accounts for about 70% of the adult gland, is peripheral to the central zone and is large in extent, with sparse and thick glandular branches and sparse epithelial cells. The non-glandular area, the pre-fibrous stromal area, is composed mainly of fibrous and smooth muscle tissue. The peripheral zone is the best area for the development of prostatitis and prostate cancer; prostatic hyperplasia occurs mostly in the migratory zone and the periurethral glandular zone. The prostate cancer and prostatic hyperplasia are not related to the central zone.