Sexual stimulation can affect menstruation for the following reasons: First, when women are sexually stimulated, the content of estrogen, sex hormones, progesterone and luteinizing hormone in the body will rise, and the formation and excretion process of normal menstruation is closely related to hormones. If the level of hormones is too high, it may lead to excessive menstruation or prolonged menstruation, or it may lead to menopause. Secondly, when women are sexually stimulated, the normal physiological functions of the endometrium and vagina are disturbed, which may cause dysfunction of the endometrium or vaginal mucosa, which may lead to menstrual disorders or menopause. Thirdly, if a woman is sexually stimulated for too long, it may lead to dysfunction of the nervous system and thus cannot regulate menstruation in time, which may also lead to menstrual disorders.