How often a woman 45 years old sex life has individual differences, to their own needs, and no fatigue after sex discomfort is appropriate, usually 1-4 times a month sex life is more appropriate. When a woman is 45 years old, her physical condition varies, and most women are in good physical and mental condition. But some women suffer from chronic diseases, or have gradually entered the perimenopause, menstruation or amenorrhea phenomenon, accompanied by hot flashes, night sweats, mood swings and other manifestations, may be resistant to sex. Therefore, when a woman is 45 years old, how often to have sex is not clearly defined, mainly according to the woman’s own physical condition, mental state, husband and wife relationship and other circumstances reasonable arrangements, usually 1-4 times a month sex is more appropriate. After sex should feel happy spirit, no physical discomfort. In life, it is recommended that both husband and wife do a good job of personal hygiene before sex to avoid cross-infection.