A woman’s last menstrual period is called menopause, or amenorrhea. Generally the last continuous year is called the last menopause, before menopause can appear perimenopausal syndrome, formerly known as menopause syndrome. The main symptoms are: 1) menstrual disorders, manifested as a change in the cycle, i.e. a week difference between one menstrual cycle and the last; 2) hot flashes, i.e. a burst of hot flashes, and insomnia, digestion and memory loss; 3) emotional irritability, with some people easily irritated, but also depression, low mood and lack of concentration. Menopause is a special state and some patients do not know that it is caused by ovarian hypofunction. When symptoms appear before menopause, some women go to internal medicine, or to neurology. In some cases, when they visit the endocrinology department, they express dizziness, weakness, or even tinnitus. When symptoms such as poor digestive function occur, they also visit the gastroenterology department, which is actually the cause of ovarian hypofunction. These are the more common clinical manifestations.