Common reasons for the appearance of prolonged menstrual periods include ovarian lesions, endometritis, uterine fibroids, cold during menstruation, excessive fatigue during menstruation, and qi and blood deficiency. When polycystic ovaries or premature ovarian failure occur, it is easy to cause changes in hormone levels in the body, which results in prolonged menstrual periods. When women suffer from endometritis, uterine fibroids and other uterine pathologies, the endometrium may shed abnormally, resulting in prolonged menstruation. If the abdomen is not kept warm during menstruation, when the abdomen is cold, the menstrual flow will be incomplete and the menstrual period will be prolonged. If a woman stays up late, has an irregular life or is fatigued for a long time during menstruation, it may also lead to prolonged menstruation. Increased menstrual flow and prolonged menstrual periods may also occur when a woman has a deficiency of Qi and Blood and her body does not control Blood. Occasionally, prolonged menstrual periods are recommended to be observed by changing lifestyle habits and paying attention to menstrual hygiene. If the prolonged period occurs for more than 7 days, it is necessary to go to the gynecological department of the hospital for consultation and treatment.