The clinical definition of excessive menstruation is that every woman who has more than 80 ml of menstruation per period is called having excessive menstruation. However, many women have no way to determine how much 80 ml of menstruation is, and she does not know whether her menstruation is excessive or insufficient. So according to the amount of menstruation 80ml, many women are unable to judge. To judge the amount of menstruation based on clinical experience, if you change the sanitary napkin once in 1-2 hours and the area of blood on the sanitary napkin at one time is greater than 2/3, or close to full, we would consider your menstruation to be a little on the heavy side. In addition, we will also ask her how many sanitary napkins she changes in a day, and whether she uses night or day sanitary napkins at night. If some patients say they use night sanitary napkins at night, change two or three napkins a night, and they are all full, or use adult diapers, this is definitely excessive menstruation. In addition, if she has excessive menstruation for a long time, she will have symptoms of anemia. Some people are pale, dizzy, and have palpitations when they come, and this is a case of anemia due to prolonged heavy menstruation. Therefore, you should not underestimate excessive menstruation, as it can affect your health and lead to chronic anemia. If the patient has no way to determine whether it is really excessive or within the normal range, she needs to come to a gynecological endocrinologist to see a specialist to assess whether your menstruation is normal or not.