Breastmilk can only be placed at a constant temperature for 2 hours, the longer it is placed, the faster the nutrients within the breastmilk are lost, and by the interference of bacteria in the air, which can lead to the deterioration of breastmilk. Therefore, when you express breastmilk to your baby, don’t give it more than 2 hours, and expired breastmilk is easy to cause gastrointestinal reactions when given to your baby. If you want to store breastmilk for a longer period of time, you can choose to put it in the refrigerator freezer or chiller, it can be stored for 24 hours in the chiller, and if you put it in the freezer, it can be stored for 3-6 months. Keeping it in the freezer is the best way to store breastmilk for a longer period of time, and at the same time, you can use this breastmilk as the best food for your baby when you don’t have enough breastmilk at a later stage.