It is generally believed that premature ejaculation is a phenomenon in which a man ejaculates after his penis becomes erect, before it enters the vagina, or just before it enters or just before it is pumped, and the penis also naturally weakens and enters a period of inactivity. Clinically, ejaculation is diagnosed as premature ejaculation when the penis is erect before entering the vagina. For those who can enter the vagina for sexual intercourse, if they ejaculate quickly without moving a few times, it is also defined as premature ejaculation. The causes of premature ejaculation can be summarized into two categories: (1) due to mental factors: more than 80% of premature ejaculation patients are caused by mental factors. For example, long goodbyes, honeymoon, excessive excitement or tension, excessive fatigue, and poor relations between husband and wife are all factors that trigger premature ejaculation. (2) There are organic diseases: for example, congenital malformation of external genitalia, prepuce, inflammation of glans or foreskin, urethritis, phimosis, multiple sclerosis, spinal cord tumor, cerebrovascular accident, epididymitis, chronic prostatitis, etc. can reflexively affect the spinal cord center and cause premature ejaculation. Some kind of systemic disease and weakness can also cause sexual dysfunction and premature ejaculation.