Oedema of the vulva after a normal delivery will gradually improve after 3-4 days after delivery. In the process of delivery, due to the descent of the fetal head, the muscles and ligaments of the vulva will be excessively stretched, which will cause damage to the tissues, and the accumulation of lymphatic fluid and tissue fluid in the interstitial space of the tissues will lead to tissue edema. When this happens, the mother can use magnesium sulfate external compresses, or local moxibustion can also reduce the symptoms of edema, infrared lamp irradiation, physical therapy can also reduce the symptoms. Simple edema recovers quickly after delivery, but if hematoma occurs, the recovery will be slower, and will be gradually absorbed after about 1 week after delivery.