Premature ejaculation is related to glans sensitivity, which can lead to premature ejaculation. Premature ejaculation can be divided into primary and secondary, primary premature ejaculation is from the first sexual intercourse, the penis into the vagina before or after entering the vagina within 1 minute of ejaculation, secondary premature ejaculation is in the premature ejaculation symptoms before the existence of a period of normal time of ejaculation function, into the time to ejaculation is less than 3 minutes, often secondary to prostatitis, thyroid gland disease, glans sensitivity, etc. a variety of reasons. Some studies have shown that patients with primary premature ejaculation have higher penile head sensitivity and a wider area representing the genital cerebral cortex. Patients with primary premature ejaculation have more branches of the dorsal penile nerve than normal, high excitability of the dorsal penile nerve, low vibratory threshold, and especially higher excitability of the sensory nerves in the head of the penis than normal, so that the ejaculation reversal time is shorter during sexual intercourse. If there are symptoms of glans sensitivity and premature ejaculation, you should go to the hospital in a timely manner to improve the relevant examination, and under the guidance of the doctor for symptomatic treatment.