When heating breastmilk in the refrigerator, you should first put it in the refrigerator freezer or put it in cold water to thaw, then you can take the methods of breastfeeder heating and hot scalding in water: 1. Breastfeeder heating: put the bottle with breastmilk in the breastfeeder, adjust the temperature to 40-50℃, then heat it. When the heating light goes off, it means that the breast milk is warmed up and can be given to the baby. 2. Hot scalding in water: Put the breast milk in the bottle and place the bottle in a container with hot water of 40-50℃ and heat it by conduction. When soaking, shake the container from time to time to make the breast milk heated evenly. You can test the temperature by placing a drop of breastmilk on the inner section of the palm of your forearm, usually so that it is not hot, or you can use a thermometer to measure it to avoid overheating the breastmilk and damaging the nutrients of the breastmilk or scalding your baby. The stored breast milk can only be heated once, and if the heated breast milk is not completely eaten, it should be discarded and not reheated to feed your baby. In addition, do not use the microwave oven or boil the breast milk to heat it directly, it will destroy the nutrients of breast milk and may cause diarrhea to the baby.