Under normal circumstances, the male penis has stopped developing after adulthood, it is impossible to grow longer, and the drugs and training methods publicized on the Internet that can make the penis grow longer have a great probability of being ineffective, and the only way to make the penis grow longer in clinical practice is to have surgery. Penis lengthening surgery is generally applicable to patients who have a short penis and are unable to have normal sexual intercourse. Surgery does not really increase the length of the penis, but by cutting the superficial suspensory ligament and the deep suspensory ligament above the penis and separating part of the penile corpus cavernosum hidden in the perineum, it achieves the purpose of lengthening the penis. For those with uncontrolled inflammation of the penile scrotum, those with coagulation disorders and those with uncontrolled diabetes, surgery is not advisable for the time being. Moreover, the surgery involves certain risks, if too much suspensory ligament is removed, it may cause penile instability. Nerves and blood vessels may be damaged during surgery, leading to erectile dysfunction of the penis. If the penis is short and affects the sexual life, it is recommended to consult a doctor in time.