In ancient times, tian kui referred to a woman’s menstruation, and women’s tian kui refers to the onset of a woman’s menstruation, which is now mostly used in traditional Chinese medicine to refer to menstruation. A woman’s first menstrual period is called menarche and is an important sign of puberty. The onset of menstruation is mostly indicative of the production of estrogen by the ovaries, which causes the lining of the uterus to proliferate, and when estrogen reaches a certain level and fluctuates significantly, it causes the lining of the uterus to fall off. Woman Tiankui that is, the onset of menstruation, when a woman’s endometrium in the ovarian secretion of estrogen and progesterone cycle, there will be a proliferative and secretory phase of change. When a woman’s ovarian corpus luteum atrophies, the level of estrogen and progesterone drops abruptly, bringing about insufficient blood supply to the endometrium, followed by exfoliative bleeding, i.e., the onset of menstruation. During menstruation, it is forbidden to eat spicy, stimulating and cold foods, try not to do strenuous activities to avoid increasing the amount of menstruation, and not to stay up all night and labor, and also pay attention to the abdomen to keep warm and avoid getting cold.