Premature ejaculation is the most common symptom of sexual dysfunction in men after impotence, and is one of the most misunderstood problems of normal sexual function. American sexologists surveyed 5,300 men and the result was that 75% of them, had ejaculated 2 minutes after penetration. China has also had a survey, the survey has no time limit, at any time in your life there has been premature ejaculation will give a record, the results of 65% of people at different times have had premature ejaculation. This indicates that premature ejaculation is the most common male sexual dysfunction, both in foreign countries and in China. Different people have different interpretations of premature ejaculation, and the meaning of premature ejaculation as described by each patient is very confusing. Diagnostic criteria regarding premature ejaculation vary widely, and a globally accepted definition of premature ejaculation has yet to be reached. The more stringent diagnostic criteria for premature ejaculation are based on whether the sexual partner receives sexual pleasure, but this is clearly too strict a criterion for judging whether a man is prematurely ejaculating based on his partner’s sexual satisfaction or whether he can achieve orgasm. This is because the female partner’s sexual pleasure is also related to a variety of other factors, such as the female partner’s mood, the male partner’s caress, the warmth afterwards, the position of sexual intercourse, etc. As for the duration of sexual intercourse is also closely related to age, physical strength, sexual life experience, sexual position, penis pumping amplitude, frequency and the sexual response of women. Even the same person in each sexual intercourse ejaculation fast and slow is not the same, the difference is too big, which will make a large number of men face the embarrassment of “premature ejaculation disease”, a foreign sexologist Feather’s research shows that only 27% of women in less than a minute of sexual intercourse can often reach orgasm. Now most people say premature ejaculation, actually refers to premature ejaculation, is not up to such a long time, then, premature ejaculation early to what extent is considered premature ejaculation? At present, most experts and scholars believe that: during sexual intercourse, before the man’s erect penis is inserted into the woman’s vagina, or just when it enters, or just after it is inserted, ejaculation occurs and the penis then shrinks and softens, so that sexual intercourse cannot continue and is aborted is called premature ejaculation. Some people also believe that ejaculation after the penis enters the vagina and is in motion for less than a minute, or ejaculation after less than 15 strokes of the penis in the vagina, can be called premature ejaculation. In short, premature ejaculation is manifested as premature and rapid ejaculation after erection within a certain period of time, thus affecting sexual life and sexual satisfaction of both parties.