2 times to express the milk is generally not recommended to put together, specific need to be judged according to the interval time, if the interval time is shorter can be put together, and vice versa is not recommended. Breastfeeding milk can be expressed and put in the refrigerator, according to the baby’s amount of milk to be divided into breastmilk, and labeled with the date on each bag, easy to take each time to avoid waste. If the interval between two expressions is only a few minutes, they can be put together. However, if the first milk has been refrigerated or frozen in the refrigerator for a certain period of time, it is not recommended to put them together. There is a temperature difference between the two milks, which affects the quality of the milk when put together, and repeated opening and closing of the milk bag will cause the milk to harbor bacteria, which is not conducive to the growth and development of the baby. General refrigeration can be stored for 24-48 hours, frozen 3 months, storage time should not be too long, reasonable storage of milk, beware of deterioration, to provide the best quality of milk for the baby, to ensure that the baby’s healthy growth and development. If your baby drinks such milk and becomes unwell, you should seek medical attention.