Premature ejaculation medical judgment standard time for sexual life time is less than three minutes, in the clinical can be judged as premature ejaculation. Under normal circumstances, couples have sex, more than three minutes ejaculation, indicating that men’s sexual function is relatively normal. If the sexual life time is less than three minutes, the male ejaculation, indicating that the male existence of premature ejaculation, occasional premature ejaculation, generally will not cause adverse effects, repeated premature ejaculation, may affect the quality of sexual life. Men with a long time of premature ejaculation, may be related to mental psychological factors, prostatitis, scalp glans, penile dorsal nerve sensitivity and other factors, it is recommended to consult a doctor for examination, to clarify the specific triggers, under the guidance of the doctor reasonable treatment, as soon as possible to promote the return of sexual function to normal, to avoid causing adverse effects.