Premature ejaculation is a common male sexual dysfunction second only to erectile dysfunction (ED), and about 1/3 to 1/2 married men have premature ejaculation to varying degrees. The definition of premature ejaculation is still controversial and is usually evaluated by the length of the ejaculatory latency (time between penile insertion into the vagina and ejaculation) in men or the frequency of women reaching orgasm during intercourse. Premature ejaculation can be defined when a man loses the ability to control ejaculation during sexual intercourse and ejaculates before or just after penile insertion into the vagina; or when a woman reaches orgasm less than 50% of the time during sexual intercourse. Clinically, premature ejaculation can be divided into primary premature ejaculation and secondary premature ejaculation. Primary premature ejaculation refers to premature ejaculation since the first sexual intercourse; while secondary premature ejaculation refers to premature ejaculation that occurs gradually after a period of normal ejaculatory function in the past, often secondary to diseases such as erectile dysfunction or reproductive tract infection. Recent studies have shown that, in addition to psychological factors, premature ejaculation has a more sensitive sensation and higher sensory nerve excitability of the penis head than normal, and a shorter ejaculatory latency and ejaculatory reflex arc, which can easily induce premature ejaculation during sexual intercourse. The selection criteria for primary premature ejaculation: 1. The duration of sexual intercourse is generally less than 2 minutes since the beginning of the first sexual intercourse. 2. The number of consecutive intravaginal jerks is generally less than 20. 3.Satisfaction of sexual partner is less than 50%. 4.Inability to control ejaculation even after ejaculation control training. The distal dorsal penile nerve selective excision is to cut off the redundant dorsal penile nerve to preserve the 3 dorsal penile nerves, which reduces the sensitivity of the penile head, improves the threshold of ejaculatory reflex, and prolongs the ejaculatory latency, thus improving the quality of sexual life. The indications for this surgery are: 1. Age is generally less than 45 years old. 2.The angle of erection of the penis during sexual life is consistently greater than 90 degrees. 3.High penile head sensitivity. 4, except for poor psychological quality. 5. Those who voluntarily give up medication.