Heavy and prolonged menstruation is mainly due to hormonal levels and excessive endometrial hyperplasia, endometrial lesions, poor contraction of the uterus, and in some women due to poor dietary habits. Hormonal causes are the most common, mainly due to persistently low progesterone levels and high estrogen levels. Hormones are regulated by the female gonadal axis, and when disorders occur, they lead to excessive thickening of the functional layer of the endometrium, resulting in heavy and prolonged menstruation. Excessive endometrial hyperplasia may lead to endometrial cancer and irregular vaginal bleeding. Menstruation is also affected by many factors, such as diet, environment, mood, etc. It is necessary to arrange the diet and rest time reasonably, ensure sufficient sleep, do not stay up late, do a good job of self-regulation, maintain a good state of mind, and avoid excessive emotional fluctuations.