The normal sexual life time between couples is generally around 4-6 minutes, young and vigorous, good sexual function can insist on 10-30 cases are there. If a male friend suffers from premature ejaculation, it will lead to disharmony in sexual life, which may affect the couple’s relationship, and if it is more serious, it may lead to family breakup. Premature ejaculation can be divided into three degrees according to the duration of ejaculation: 1. Mild premature ejaculation: the time after penile insertion into the vagina is more than 2 minutes less than 6 minutes, less than 120 jerks with normal amplitude. During sex with a partner, 5-6 out of 10 times during sex cannot cooperate with the partner to control ejaculation. If you have any of the above, you are considered to have mild premature ejaculation. 2. Moderate premature ejaculation: Ejaculation after the penis is inserted into the vagina for more than 1 minute but less than 2 minutes and less than 60 times with normal amplitude pumping. In the process of sex with partner, 7-8 times out of 10 times can not cooperate with partner to control ejaculation. If you have any of the above, you are considered to have moderate premature ejaculation. This is the symptom performance of severe premature ejaculation. 3. Severe premature ejaculation: ejaculation before or just after penile insertion into the vagina. Ejaculation occurs less than 1 minute after penile insertion into the vagina and less than 15 times with normal amplitude of pumping. During sex with a partner, 10 out of 10 times during sex cannot cooperate with the partner to control ejaculation. Any of the above is considered severe premature ejaculation.