Inadequate menstruation can be caused by many reasons, such as a sudden change in the environment, there will be symptoms of maladjustment, and menstruation will be inaccurate. When there are endocrine hormone disorders, endocrine hormone diseases, polycystic ovaries, prolactinemia, or even low progesterone, it can also cause irregular menstruation. Mental factors such as high stress and external factors may also cause irregular menstruation. Irregular menstruation can also be caused by the presence of diseases such as uterine fibroids, endometrial polyps or endometrial hyperplasia, which cause frequent bleeding. In this case, it is recommended to go to the hospital in time for gynecological ultrasound examination, including endocrine hormone examination, to rule out whether there is any abnormality, according to the situation, oral short-acting contraceptives to regulate the cycle.