The difference between frozen milk and fresh breastmilk lies mainly in the nutritional content, which is higher in fresh breastmilk than in frozen milk. Frozen milk here refers to fresh breast milk placed in a low-temperature environment and frozen milk, in general, fresh breast milk in a low-temperature environment, the fat, protein content will be reduced, the PH value will also be reduced, and after thawing will appear to float in the fat globules as well as coagulation of the sediment, the nutritional value of the subsequent decline. Moreover, frozen milk needs to be heated before giving the baby to drink, in the heating process, its protein, carbohydrates and other nutrients also have a certain loss, so the nutrients in frozen milk is not as high as in fresh breast milk. Therefore, it is recommended that babies try to drink fresh breast milk, in addition to the preservation of frozen milk need to pay attention to the sterilization and sealing of storage equipment, so as not to cause bacterial reproduction, resulting in babies drink after the physical discomfort. If you have any other questions, please consult your doctor.