After being sealed, breastmilk can generally be kept in a 4°C refrigerator for 24-48 hours; if placed near a refrigerator door that is frequently opened, it can generally be kept for 24 hours; if the refrigerator temperature is around -18°C, it can be kept for about 3 months. If the mother’s body is too full of milk production, she can use a breast pump to suck out the milk, put it in a clean, special breast milk storage bag, mark the date of sucking and the amount of milk to be sucked, and then store it in the refrigerator. The milk storage time varies between refrigerators of different temperatures. A refrigerator with a general temperature of 4℃ can be stored for about 48 hours, or 24 hours if you need to open the refrigerator door frequently, but too much time will lead to bacteria growth. And the temperature is about -18 ℃ refrigerator, can be stored for about 3 months. When you take it out to eat, you need to heat it up, and you cannot put it into the refrigerator again. Breast milk should not be kept in the refrigerator for too long, and overdue breast milk is not recommended for babies. When the mother is separated from the baby, the breast milk can be kept in the refrigerator, but the consumption requirements should be strictly followed to ensure the baby’s diet is healthy.