Usually negative psychological emotions can directly affect the endocrine level and lead to changes in the menstrual cycle, so bad moods and mood swings can lead to delayed menstruation. Women’s menstruation is mainly regulated by the neuroendocrine hypothalamic-pituitary-ovarian axis in the body, and abnormalities in any of these links can lead to menstrual disorders. If a woman is in a bad mood or has mood swings, it can cause abnormal regulation of the hypothalamic-pituitary-ovarian axis, resulting in delayed menstruation or even amenorrhea. When the cause is clearly identified, menstruation can return to normal after the mood is relieved, and if appropriate, some oral menstrual regulators can be taken to bring her menstruation back to normal as soon as possible. In addition, women are advised to maintain a stable mood and good attitude, eat less stimulating food, pay attention to perineal hygiene during menstruation, change sanitary napkins regularly to minimize the occurrence of gynecological diseases.