The first time after giving birth, the amount of menstruation is particularly heavy may be due to physiological reasons, but also may be due to the thickening of the uterine lining, the uterus is not good, uterine fibroids and other reasons for different causes of different treatments, you should go to the hospital in a timely manner, to clarify the cause of the disease, the symptomatic treatment. 1. Physiological reasons: the first time after giving birth, the amount of menstruation is particularly heavy may be due to physiological reasons, mainly because women will not have menstruation from the time of pregnancy to the time of delivery, and the first time after the delivery of menstruation in the body’s oestrogen secretion will be too much, resulting in menstruation is particularly heavy. 2. Thickening of the uterine lining: The excessive level of estrogen secreted by the ovaries after delivery will lead to excessive thickening of the uterine lining, which will lead to more bleeding when the uterine lining falls off during menstruation, which can be treated by taking progesterone and dydrogesterone tablets under the guidance of the doctor, or surgical curettage can be carried out. 3. Poor uterine regeneration: it may be caused by weak uterine contraction, which can be improved by intravenous injection under the guidance of the doctor, commonly used medicines are hysteronin and misoprostol. 4. Uterine fibroids: the patient may suffer from uterine disease before pregnancy, under the stimulation of hormones during pregnancy, causing the tumor to increase in size and aggravate the condition, thus leading to the first postpartum menstruation with excessive menstrual blood, can be surgically treated under the guidance of the doctor, usually using hystero-peritoneoscopic technology for treatment. It is necessary to pay attention to the symptoms of particularly heavy menstruation after childbirth, after excluding physiological reasons, should consult a doctor in time to avoid delaying the condition.