There are many reasons for breastfeeding, but here are a few of the most common ones: First, the mother produces too much milk and the baby eats too little. Secondly, the delay in the start of breastfeeding leads to a rise in milk. Third, the baby’s sucking method is not correct, each time the sucking can not completely empty the breast. To prevent breastfeeding, the mother should start breastfeeding as early as possible and let the baby practice sucking on both sides. You should also feed your baby on demand, as long as he or she needs it, and train him or her in the correct way of sucking. Many new mothers feel the obvious sensation of increased milk on the 3rd-4th day after giving birth, if not dealt with in time, it will cause blockage of the milk ducts or milk stagnation, which will lead to breast nodules or even hard lumps, and they will slowly feel pain in their breasts, thus not daring to touch them. Many women suffer from postpartum mastitis caused by poor milk discharge, and the best solution is to let the baby take the milk. If the swelling of the breast is obvious and the baby has difficulty sucking, you can use a hot wet towel to warm it up, let the breast become soft and then use your hand to express the milk, suck the milk with a breast pump, or have someone help you to suck out the milk.