Premature ejaculation is a condition that occurs after the penis is inserted into the vagina during sex, before the woman reaches orgasm, while the man’s intercourse time is shorter than 2 minutes. It is generally believed that premature ejaculation is a phenomenon in which a man ejaculates after his penis is erect, before it enters the vagina, or just before it is incorporated, or just before it enters and before it is pumped, and the penis also weakens and enters a period of inactivity. It is easy to make a clinical diagnosis of ejaculation before the erection of the penis enters the vagina, but there is no absolute standard for what is timely and what is too early to enter the vagina for sexual intercourse. There are two main causes of premature ejaculation: mental factors, this type of premature ejaculation patients can also be called psychological premature ejaculation, such as long-term overindulgence, excessive masturbation during adolescence and other tensions, can lead to increased central sexual excitement in the human cerebral cortex and increased excitability of the spinal ejaculation center, thus triggering premature ejaculation. Organic lesions, many diseases can reduce the excitability of the ejaculatory center in men, which means that ejaculation is more likely to occur, such as inflammatory diseases like urethritis, vesiculitis and prostatitis. According to its clinical manifestations, clinically premature ejaculation is divided into three categories: a. Habitual premature ejaculation: refers to those who consistently ejaculate prematurely during sexual intercourse after adulthood, such people have normal sexual physiological function, strong penile erection, strong sexual desire, strong penile erection, but coitus impatience, mostly seen in young adults; b. Old age premature ejaculation: is caused by sexual function decreases, ejaculation time occurs gradually after middle age or in the elderly, often accompanied by The ejaculation is often accompanied by diminished libido and weak penile erection. Therefore, premature ejaculation can generally be diagnosed through clinical manifestations, but the causes are very diverse and can cause other sexual dysfunctions such as impotence, which has serious consequences and should be taken seriously and treated early.