Generally speaking, men who lose the ability to control ejaculation during sexual intercourse and ejaculate before or soon after penile insertion into the vagina can be defined as premature ejaculation. But premature ejaculation can not be blind, there are several kinds can not be considered premature ejaculation. 1, can not cause the female sexual pleasure: male and female female function play, there is a male fast female slow characteristics, male realizes for erection quickly, soon into the orgasm and ejaculation; on the contrary, female performance for sexual excitement appears slower, generally after ten minutes, or even longer some time to come late. This is an innate difference, so male ejaculation occurs while the woman has not reached orgasm at all, which is commonplace. For this situation, at most a sexual intercourse with the sexual disharmony, and can not be considered the male sexual function, such as premature ejaculation sexual dysfunction. 2, newlywed premature ejaculation: the newlywed stage is prone to premature ejaculation. (1) the newlywed stage of sexual excitement is particularly high, full of longing and desire for sex, both fresh and curious, it is easy to stimulate ejaculation. (2) just started sexual life, the couple between the business has not reached the realm of satisfactory cooperation, the play of sexual function has not fully entered the normal state, prone to premature ejaculation. 3, after a long time without sexual intercourse rapid ejaculation: couples have not met for a long time, rapid ejaculation occurs during sex think they are suffering from premature ejaculation, worry about their sexual function has a problem. In fact, there is an inverse relationship between the quickness and slowness of the ejaculation time and the length of time between intercourse. In other words, if you have a frequent sexual life and the interval between sexual intercourse is short, ejaculation will appear more slowly during sexual intercourse. On the contrary, sex life is not much, in a long time no sex life “sexual hunger” condition, sexual excitement suddenly increased, once the sexual intercourse will be faster ejaculation. 4, erectile dysfunction: premature ejaculation and erectile dysfunction are not the same pathogenesis, and there is no causal relationship between them. But indeed some patients, after a longer period of premature ejaculation, and erectile dysfunction, which is the result of psychological factors, long-term premature ejaculation, they have been distracted, each time the room is anxious, fearing that the quality of sex life is not good, fearing that the wife is not satisfied, so the psychological tension, anxiety and worry, these psychological factors are enough to cause erectile dysfunction. 5, faster than others ejaculation: ejaculation fast or slow does not have to be compared with others, because everyone’s sexual physiological activities are different, and sexual life experience and frequency of sex is not exactly the same, there is no comparability, so do not do so.