The length of time breastmilk can be refrigerated depends on the temperature at which it is stored and how tightly the container is sealed. Generally speaking, it can be stored at 20-30℃ for no more than 4 hours, at 4℃ for no more than 48 hours, and at -15 to -5℃ for up to 6 months. Fresh breast milk squeezed into a sealed plastic container, refrigerated in the refrigerator can be stored for about 2 days, if more than 48 hours, the protein and fat inside the breast milk may be decomposed, as well as contaminated by bacteria, which causes breast milk deterioration, babies are prone to abdominal pain, diarrhea, and other gastrointestinal discomfort after consumption. If in -15 ~ -5 ℃ frozen conditions can usually be stored for about 6 months, storage time is longer, applicable to a short period of time do not drink. Breastmilk frozen storage should be careful to try to separate from other foods, to avoid contamination, affecting the deterioration of milk. Generally, it can be taken out and warmed up for direct consumption.