Male and female coitus is usually more than 2 minutes is considered normal, sexual life of the male genitals in the vagina more than 10-30 times is considered normal, if less than 10 times or coitus time is shorter than 2 minutes is called premature ejaculation. The quality of coitus depends on whether men do concentrated sexy training, men should let each other produce pleasure before sex, then men then have sex, often will achieve the purpose of synchronized excitement. If the male only focus on their own to reach the point of excitement, and the woman did not feel, so in the male ejaculation, the woman still did not reach orgasm, which often produces the phenomenon of the two sides of the sexual life is not coordinated. It is recommended that men do some foreplay work, try to take care of women’s feelings, so that the same room has a higher quality. It is recommended that men should adhere to the exercise, patients can properly strengthen the physical exercise, especially the waist and leg muscle strength exercise, male patients in the urination can try to control the flow of urine and appropriate interruption of urine, and then repeated many times of urination, you can effectively control the time of ejaculation in order to improve the situation of premature ejaculation.