婴儿有效的吸吮有助于预防涨奶。在给宝宝哺乳时妈妈的体位要舒适、抱姿要合理，宝宝含接乳头要正确，体现在宝宝的下颌紧贴乳房乳头及大部分乳晕含在口中，下唇向外翻，上唇上翻上方的乳晕比下方露出的少，宝宝慢而深的吸吮，这就是宝宝吃到母乳的征象。妈妈舒服乳头没有疼痛感，能听到宝宝咕咚的吞咽声，这表明宝宝衔接良好，达到了有效吸吮。
Effective sucking helps prevent breast inflation. When breastfeeding the baby, the mother's body position should be comfortable and the holding posture should be reasonable. The baby's nipple should be connected correctly, which is reflected in that the baby's lower jaw is close to the nipple and most of the areola is contained in the mouth, the lower lip turns outward, the areola above the upper lip turns up is less than that exposed below, and the baby sucks slowly and deeply, which is the sign that the baby eats the breast milk. Mother comfortable nipple without pain, can hear the baby Gudong swallowing sound, which shows that the baby is well connected, to achieve effective sucking.