Thawed breastmilk is kept inside the refrigerator for about 7 days at most, and breastmilk that has been kept for too long is not suitable for babies to eat in order to avoid affecting their health. The main reason is that too long storage will lead to a slow loss of nutrients in breast milk, and it will deteriorate, giving the baby no nutrition, but also easy to hurt the baby’s stomach and intestines, leading to imbalance in the body flora, causing diarrhea symptoms. Preservation methods 1, the breast milk should be selected from a special milk storage bag, or use a thoroughly washed and disinfected bottle to preserve; 2, a short time to preserve, can be placed in the normal room temperature environment, 15 ℃ below the room temperature can be stored for 1 day, 20 ℃ can only be stored for 4-6 hours; 3, a long time to preserve, should be placed in the refrigerator freezer or freezer, freezer temperature 0-4 ℃ It can be kept for 5-7 days when the freezer temperature is 0-4℃; in the freezer at -18-20℃, it can be kept for 1-2 months. Caution 1. Breast milk can be kept in the freezer for about 2 months, and should be thawed slowly with water at 40℃, not in the microwave oven; 2. If it is not heated, it can be refrigerated for about 24 hours; if it is heated, it should not be heated for more than 4 hours, so that the nutrients will not be destroyed and bacteria will easily grow; 4, pay attention to the storage time marked on each storage container, and feed your baby according to the order of storage; 5, some babies are sensitive to the taste of breast milk and may refuse to drink thawed breast milk, so women who try to freeze breast milk should first drink a small amount. Women who try to freeze breastmilk should first freeze a small amount for testing.