Pumped breastmilk will keep for about 1-2 hours in summer, 3 hours in winter and up to 6 hours in the refrigerator. Of course, this is not an absolute rule, and will be adjusted according to the room temperature and refrigerator temperature. The storage time of pumped breastmilk is closely related to the environment. In summer, when the temperature is higher, the storage time is shorter. In winter, when the temperature is lower, the storage time is longer. Refrigerator storage time can be up to 6 hours, and can ensure that the composition of breastmilk is not destroyed. Breastmilk is the safest and most natural food for babies, rich in calcium and phosphorus metabolites, which can provide babies with rich nutrition and calories, and ensure that babies are not prone to colds after absorbing immunoglobulins. Therefore, breastfeeding is very important. In order to ensure the safety of breastmilk, the nipples must be cleaned frequently to avoid bacterial growth and mastitis, which can provide a safer way of breastfeeding for babies. When sucking out breastmilk, you should pay attention to the cleanliness and cleanliness of the sucking tools and bottles, which is very important for the safety of infants and young children. Breastmilk must be preserved in special complete breastmilk preservation bags. When consuming stored breastmilk, thaw the stored milk completely first, and then put it into a simmer for adequate heating before consumption.