The surgical procedure may damage the autonomic nerves of the penile corpus cavernosum and cause male sexual dysfunction. The recovery of sexual function after surgery is mainly related to three factors: 1. Age: 91% of patients under 50 years old recovered sexual function after surgery, 85% between 50 and 60 years old, 58% between 60 and 70 years old, and only 25% over 70 years old. Because prostate cancer mainly occurs in middle-aged and elderly people, and a large proportion of these patients have erectile dysfunction before surgery. 2. Tumor stage: Patients whose tumors penetrate the prostate envelope or invade the seminal vesicles have twice the chance of erectile dysfunction after surgery than early stage patients. 3.With or without preserving the vascular nerve bundle: The maintenance of male erectile function is mainly controlled by a kind of tissue called vascular nerve bundle around the prostate, whether or not to preserve the vascular nerve bundle during surgery mainly depends on the patient’s tumor condition and preoperative sexual function. of residual.