Premature ejaculation is a disorder of sexual intercourse that occurs when the penis is inserted into the vagina before the woman reaches orgasm, while the man’s intercourse time is shorter than 2 minutes and he ejaculates early. The typical clinical manifestation of premature ejaculation is that the penis ejaculates after erection, before it enters the vagina, or just before it is incorporated, or just before it enters but before it is pumped, and the penis also weakens and enters the non-return period. The clinical diagnosis is usually made by the performance and the subjective feeling of the patient, but there is no definite conclusion on how long it takes. The first is habitual premature ejaculation, which refers to those who consistently ejaculate prematurely during sexual intercourse after adulthood, with normal sexual physiology, strong sexual desire, strong penile erection and impatient coitus, mostly in young adults; the second is senile premature ejaculation, which is caused by sexual decline; the early ejaculation time that occurs gradually after middle age or in the elderly, often accompanied by decreased sexual desire and penile The second is premature ejaculation in old age, which is caused by sexual decompensation. The third is occasional premature ejaculation, which mostly occurs when the body and mind are tired and emotionally volatile. The first is that the patient’s ejaculation is not premature, but occurs acutely after a mental or physical stressful situation, often accompanied by weak erection. Therefore, premature ejaculation is not difficult to make a diagnosis through clinical manifestations, but it is often clinically complicated with other diseases of impotence, and the specific etiology requires a specialist to identify and guide the treatment.