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. According to the American sexologist Kinsey’s survey of 5300 men in the 1930s, the result was that 75% of them, had ejaculated 2 minutes after penetration. Qin Yunfeng had surveyed 234 elderly couples, of which 43, or 18.4%, had intercourse for less than 2 minutes. In 1990, McKee et al. surveyed 65 cases of men aged 18-73 years, and there was no time limit for their survey. Laughman et al. also surveyed 1,422 men aged 18-58 years in 1994, and with a better scientific design, found that 29% had premature ejaculation. This statistical estimate is more reasonable. This indicates that premature ejaculation is the most common male sexual dysfunction, both abroad and at home. Different people have different interpretations of premature ejaculation, and the meaning of premature ejaculation as complained by each patient is confusing. The diagnostic criteria for premature ejaculation vary widely, and a globally accepted definition of premature ejaculation has yet to be reached. A study by a foreign sexologist, Feser, showed that only 27% of women regularly achieve orgasm in less than one minute of intercourse, while 66% of women take more than 12 minutes of intercourse to reach orgasm. Feser asserts that women need about eight minutes of intercourse on average to achieve orgasm regularly. As a result, some have criticized the definition of premature ejaculation proposed by Masters and Johnson, the leading couple in American sexuality research. They couple argued that:- “Men are unable to prolong ejaculation half of the time during sex in order to bring their spouse to orgasm.” This is an unscientific way of judging whether a man is prematurely ejaculated based on his partner’s satisfaction with sex or whether he can achieve orgasm, which is obviously too strict and varies too much and will cause a large number of men to face the embarrassment of “premature ejaculation”. It will further lower the self-esteem of men, damage the relationship between husband and wife, and affect sexual harmony. According to a survey of 1000 couples by the American sex scholar Gibbard, the average time of sexual intercourse is 4-7 minutes. China’s sex scholars Lv Debin surveyed 2709 people, including 470 cases of young people, 2239 cases of older people, found that the duration of sexual intercourse in the order of 5-6 minutes, 3-4 minutes, 7-8 minutes and 10 minutes accounted for most of them, about 20% each. Qin Yunfeng investigated the situation of elderly people, half of them were shorter than 4 minutes and half of them were longer than 5 minutes, and after rough statistics, the duration of intercourse was about 7 minutes. But what most people call 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? The majority of experts and scholars believe that during sexual intercourse, before the man’s erect penis is inserted into the woman’s vagina, or just before or just after, ejaculation occurs and the penis then shrinks and softens, so that sexual intercourse cannot continue and is aborted as premature ejaculation. It is also believed that ejaculation occurs in less than one minute after the penis enters the vagina in motion, or in less than 15 strokes of the penis in the vagina. 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. The actual fact is that if you can hold on to your ejaculation for more than a minute and can’t maintain it to the climax of the woman’s pleasure, most of the time the two parties are not in good harmony and coordination, as long as the man is not alone, or never considerate and loving to the woman, then it must be because you are not skilled in sexual intercourse, or don’t know the secret of coordination, or have not mastered the sexual techniques. In addition, the woman can not get sexual pleasure to determine whether the man is premature ejaculation, because the woman’s sexual pleasure is also related to a variety of other factors, such as the mood of the woman, the man’s caress, after the warmth, the position of sexual intercourse. 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 female sexual response. Even if the same person in each sexual intercourse ejaculation fast and slow is not the same, such as the first time a newlywed, after a long time reunion, or abstinence after the first sexual intercourse, due to excessive male excitement, ejaculation occurs very quickly, and even premature ejaculation, which is completely normal, do not worry, with the number of sexual intercourse increased, will adjust to the normal level. The actual fact is that you can also improve the sexual ability training, both sides strengthen close cooperation, and achieve mutual satisfaction, sexual life harmony.