There are some benefits of using a breast pump to open the milk, it can help women to dredge the mammary glands to open the milk as soon as possible, and can be negative pressure to suck out the inverted nipple, but also can be short and flat nipple lengthening is conducive to the baby sucking on the nipple. However, it is still advocated that babies suckle on their own to stimulate breastmilk secretion, unless there is a need to use a breast pump to open the milk in the following cases: 1, the newborn baby is too small or too weak to suckle on the nipple, need to take out the milk through the breast pump; 2, the nipple is cracked or chapped and painful and can’t be used to nurse the baby directly, can be sucked out with a breast pump; 3, the baby is born because of special circumstances that can’t be done by mothers and infants together in the same room or mothers are taking some drugs that may be harmful to the baby during the period, can’t be used for the baby’s milk production. Harmful to the baby during the drug, can not breastfeeding, but due to not timely discharge of milk, milk accumulation in the mammary glands, will cause swelling and pain or even inflammation, should be used on time to suck out the milk; 4, nipple inversion or too small, too short, the baby can not be effective sucking, you can use a breast pump to suckle, and improve the situation of nipple inversion. In addition to applying the breast pump to open the milk, you can also make the milk flow through massage, diet and medicinal diet. After giving birth, you should start breastfeeding early, develop good breastfeeding habits, breastfeeding on demand, breastfeeding diligently, if the newborn is full but the breast has not yet been sucked empty, you should squeeze out the excess milk, to avoid excessive milk accumulation in the mammary glands, resulting in breast swelling and discomfort.