From March 2004 to August 2008, a total of cases of penile lengthening were performed, and satisfactory results were received. 1. Indications (1) Penile dysplasia, erect length less than 10cm. (2) Penile trauma and partial disconnection. (3) Small penile deformity, congenital small penis, shorter than 6cm. (4) Male pseudohermaphroditism, good testicular development. (2) Contraindications (1) Patients with bleeding disorders. (2) Patients with diabetes mellitus, blood sugar must be controlled within the normal range. (3) Patients with mental illness. (4) Patients with malformation are not adequately prepared for gender selection. (3) Pre-operative preparation (1) 1: 5000 potassium permanganate warm water sitz bath three days before surgery. (2) Shave off the pubic hair and disinfect the vulvar skin with iodophor. (1) Make a “V” shaped incision at the root of the penis slightly below the pubic symphysis, with the tip in the direction of the foreskin. (2) The skin, superficial subcutaneous fascia and deep fascia are incised to reveal the penile suspensory ligament. (3) Separate the loose connective tissue on both sides of the ligament and cut the superficial suspensory ligament near the pubic symphysis. (4) Bluntly separate the deep suspensory ligament, cut it, separate it until the deep dorsal penile vein is exposed, and pull the penis downward so that the root of the penis, which was hanging from the pubic symphysis, extends outward for 2-6 cm. a rubber membrane drainage strip is placed at the incision to reach the bottom of the incision. (5) Traction is applied to bring the cavernous bodies of both sides of the penis together in a neutral position, and the deep connective tissue and subcutaneous tissue on both sides are pulled together and sutured in the middle. (6) The “V”-shaped skin flap is sutured in a “Y”-shape. (7) Wrap the penis and the surgical incision with pressure. Small penile deformity lengthening (for all kinds of deformities of small penis): (1) A traction line is sutured at the head of the penis and an F8 catheter is inserted into the urethra. (2) A circular incision is made at the base of the penis to fully free the subcutaneous tissues of the penis and reveal the bifurcation of the penile body. (3) A small transverse incision is made at the base of the penis and the scrotal skin at the length of the penile shaft, a subcutaneous connection is made between the two incisions, a traction wire and a catheter are dragged through the connection channel together, the coronal skin margin is sutured to the scrotal skin, the incision at the base of the penis is closed with absorbable sutures, and the second stage of surgery is performed six months later. (4) The F8 catheter was inserted into the external urethra, sutured and fixed to the head of the penis, and a U-shaped skin incision wider than the penile shaft was made around the head of the penis at the scrotum, cut to the subcutaneous tissue, then the subcutaneous attached to the penile shaft tissue was freed together, and the scrotal skin was sutured again. (5) The skin flap at the penis is wrapped around the lateral suture of the penis, and when there is tension, a reduction suture is used, and then it is wrapped with Vaseline and other gauze. (5) Postoperative treatment (1) Local sandbag compression to stop bleeding. (2) Apply antibiotics to prevent infection. (3) Take female hormones as appropriate to prevent penile erection for patients with the first method. (4) Elastic bandage to wrap the penis for 1 week, used for patients with the first method. 6. Precautions (1) Prevent or reduce penile foreskin edema: the cause of edema is due to some lymphatic vessels and veins at the root of the penis that have been cut off during separation, resulting in poor return of lymphatic fluid and some veins. Preventive measures are to lie down as much as possible after surgery, and can be wrapped with elastic bandages to reduce penile edema, oral ablation. (2) easy to bleed after surgery: strict attention should be paid to hemostasis during surgery, small vessels with ion hemostasis, large vessels with silk ligatures. (3) A small hard node of 2cm × 2cm is formed after the incision, and physical therapy is used to promote the healing of the incision. (4) 3 to 5 days after surgery, tug the glans outward, 20 strokes 3 times a day for 3 weeks to prevent adhesions. (5) Sexual intercourse is prohibited for four weeks after surgery.