A woman who has a heavy period for the first time after childbirth may have an excessive amount of fibrous scar tissue that affects the contraction of the uterus during the repair process. In other cases, the uterus does not return to its original non-pregnant state and the menstrual flow increases. In this case, women can take oral medication during menstruation to promote the contraction of the uterus and reduce bleeding, so as to avoid excessive menstrual flow, which can lead to blood loss and anemia. In addition, you can eat iron-rich foods such as animal liver to prevent blood loss anemia during menstruation. For women with anemia before delivery, it is best to take blood tests to see if there is a decrease in hemoglobin and anemia. If there is anemia, it is best to take oral iron, such as ferrous succinate, to correct the anemia and then observe the menstrual cycle for 2-3 months afterwards. If the menstrual flow continues to increase, it is necessary to do relevant tests to exclude the reproductive system from the cause of the increased menstrual flow.