The occult penis is a congenital abnormality of the corporal surface of the penis. In the last decade or so, occult penis has gradually gained attention. Etiology Under normal circumstances, the penile skin is sleeve-shaped and relatively homogeneous with the penile body, and the Colles’ fascia and Buck’s fascia under the penile skin are thin layers of lax tissue. Therefore, the skin of the penis has a large degree of mobility. There is fatty tissue between the skin of the ventral wall and Scarsa’s fascia. At the dorsal aspect of the penile root the two layers are in close proximity to each other forming the penile skin and penile fascia and continue as the sarcolemma layer of the scrotum. If the penile fascia or sarcoid muscle develops abnormally or attaches abnormally during embryonic development, it will affect the normal extension of the penis. In congenital anomalies, the sarcolemma of the penis is hypoplastic during embryonic development. The sarcoid muscle is abnormally attached to the penile corpus cavernosum muscle, causing the penile skin to be stretched on the abdominal wall, preventing the development of the penile skin and causing the corpus cavernosum to be buried in the subcutaneous tissue of the prepubic bone. It is characterized by lack of penile skin, encopresis, and normal development of the penile corpus cavernosum. It is also suggested that the thickening of the fat pad of the pubic mons, obesity, tubular prepuce, post-circumcision complications, and so on. It should be called pseudocryptorchidism, which includes buried penis and fettered penis. Diagnosis The diagnosis of this disease is not difficult. It can be clinically diagnosed based on the separation of the penile body from the penile foreskin, the small size of the foreskin cavity, the short appearance of the penis with bird’s beak-like changes, or the manifestation of tubular prepuce, while a normally developed penile body in accordance with its age can be retrieved below the pubic symphysis. It is a consensus among scholars at home and abroad that occult penis cannot be corrected by simple medical therapy, such as the application of human chorionic gonadotropin (HCG). Surgery is the only definite and effective method to treat anaplasia. Since this disease is combined with different degrees of prepuce or appearance of prepuce, many primary hospitals are prone to misdiagnose it as simple prepuce and perform circumcision, which will cause penile binding and aggravate the shortage of prepuce and bring difficulties to the corrective surgery, which should be paid attention to. Choice of surgical method: Its main principles include fixing the penile skin. Excision and release of the contracted penile medial muscle and correction of penile skin shortage using the inner foreskin plate. With the improvement of etiological understanding, Shirika operation, Johnson operation and Maizel operation, Devine operation, etc. emerged, and since then, based on these operations, a large number of modified operations have emerged, which excise and release the fibrous cords and partially adopt the fixation of the penile body and skin at the root of the penis, achieving more satisfactory results and greatly improving the The success rate of the operation has been greatly improved.