Occult penis is a common condition in pediatric urology. The reason is that the abnormal fascia or fibrous cords pull the penis to the ventral side, so that the penis is hidden under the foreskin and only a pile of foreskin can be seen in appearance. Since the vast majority of occult penises have a circumferential narrowing of the foreskin, many doctors treat them as circumcision or circumcision, because usually, patients with occult penises have less foreskin and penile skin, and if they are circumcised again, the consequences make the skin even less. Usually the results of surgery for occult penis are better, but it must be distinguished from buried penis. Buried penis is mainly caused by obesity, so the improvement of appearance after surgery is not obvious, and the main treatment is weight loss. If the diagnosis of occult penis is confirmed, surgical treatment (some call it penile lengthening) can improve the appearance, and families are very satisfied after the operation. The operation method of occult penis: longitudinally cut open the foreskin on the ventral side, open the circumferential narrowing of the foreskin, turn out the glans, and sew the traction line on the glans. The inner plate of the foreskin is routinely circumcised, and the penis is removed along the superficial layer of Buck’s fascia to the root of the penis, while the abnormal fascia or fibrous cords are corrected. A stitch is placed above the root side of the penis, i.e., 2 o’clock and 10 o’clock position, without tying a knot, mark the pubic knot on both sides, pull the suture just now to the corresponding side of the mark under the skin, and thread the needle to sew the thread under the skin to fix the penis position (fixing the position is best depending on the amount of penile skin material, the penis is made long, no skin package is not good to close). Distal foreskin incision suture depends on the material, more material can be trimmed on the ring narrowing foreskin mouth, correct the ring narrowing and then sutured. Those with less material would be better off with less trimming, every bit of material is valuable, the foreskin can be cut longitudinally on the dorsal side, the caliber can be expanded and then sutured, severe cases can be trimmed and sutured serrated. Surgery for particularly severe occult penis: transfer flaps are often required. In severe occult penis, there is almost no skin and foreskin left on the ventral side, but directly the scrotal skin. In this type, a transfer of the tipped flap can be added to the above surgical method: the inner plate of the dorsal foreskin can be removed, the tipped flap can be freed, a hole can be made in the middle of the tipped flap, and the flap can be transferred to the ventral side of the penis after passing the penis through the hole (similar to the way the flap is transferred in the longitudinal flap in hypospadias surgery), and then the penis can be shaped by suturing (after suturing, it is like adding a bib to the ventral side of the penis). This can also result in a much improved appearance.