Women who have low menstrual flow can be given dietary adjustments, such as eating more soy milk, royal jelly, black beans, peanut butter, snow clams, onions, etc. containing estrogen, which can thicken the endometrium can improve menstrual history and menstrual flow can increase. If there is no improvement after food treatment, you can have a blood test for sex hormone six on the second or third day of menstruation to find out if the endocrine system is normal, and have a blood test for thyroid function to exclude the possibility of hyperthyroidism and hypothyroidism, and then give treatment according to the results of the sex hormone six test in clinical practice. If the sex hormone six tests are normal, we should find out whether there is a history of abortion in the past and whether the menstrual flow is reduced after the abortion.