Breastmilk that has not been drunk after thawing cannot be put back in the refrigerator to be chilled or frozen. If a breastfeeding woman is separated from her baby, she can use a breast pump to suck out the milk into a milk storage bag and put it in the refrigerator to freeze or chill. When you feed your baby, you need to warm the frozen or chilled milk first. If the baby doesn’t drink the frozen milk or doesn’t drink it well after it is removed, it is not recommended to refrigerate or freeze the rest of the milk. Because after the milk has been rewarmed, there will be bacterial growth, and the nutrients will also be damaged. The baby’s gastrointestinal function is relatively weak, after eating this kind of milk, may lead to gastrointestinal dysfunction, indigestion and so on.