Breast pumps must be washed once and routinely sterilized, and then stored in a clean bag. Because the breast pump is used directly on the nipple, if the milk left on the breast pump has a bacterial infection, it is easy to cause inflammation of the mammary gland, so it must be cleaned and must be sterilized. In addition, the milk sucked out of the breast pump is directly fed to the child to eat, if the milk products have bacterial infection is easy to cause gastrointestinal discomfort in the child, and even diarrhea symptoms, so the cleaning of the breast pump as well as disinfection is very important. In addition to breastfeeding hands are also to be routinely cleaned and sterilized before feeding the child.