Breastmilk at room temperature spoils easily, usually in 2 hours if it’s summer and 4 hours if it’s winter. If it is winter, it will be spoiled in 4 hours. If refrigerated at 0 to 4 degrees Celsius, breastmilk can be stored for 48 hours, and at -15 to -5 degrees Celsius it can be stored for up to 6 months. Expressed breastmilk should be stored in clean, dry, airtight and sterile milk bags. It is best to store breastmilk in the refrigerator, chilled or frozen, and labeled with the date. It should be noted that breastmilk should be consumed as soon as possible after refrigeration, and refrigerated milk should be heated up to 40 degrees and consumed, too low a temperature is not good for the baby’s stomach, and too high a temperature will destroy the nutrition of the milk powder. In summary, the milk is best consumed as soon as possible, if the amount of milk out of the baby can not finish should be promptly put into the refrigerator closed storage.