The storage time of frozen milk varies depending on the use of the freezer for breast milk put into the freezer. Generally frozen milk can be kept for 3-6 months without deterioration. If the freezer is often opened and closed, the storage time is almost 3 months. If the freezer door is not opened and closed, the frozen milk can be stored for 6 months. When storing breast milk, you need to pay attention to using a good plastic bag to keep it in order not to affect the quality of breast milk. The date of storage should be indicated on the plastic bag and sealed with a sealing strip. You should thaw the frozen milk before use, either by rewarming it at room temperature or by scalding it in water, but not by heating it in a microwave oven. The thawed breast milk should be consumed at once and should not be put back into the freezer again. Frozen breast milk should not be left at room temperature for too long after it is taken out, so as not to breed bacteria and cause gastrointestinal discomfort to your baby.