Newborns should not squeeze the breast, so as not to cause inflammation and infection. Most of the newborn nipples will be physiological enlargement, is due to the mother’s hormone level is too high, the newborn after birth of the body’s hormone level is also relatively high, the breast will have a slight tendency to swell, generally do not have to special treatment, with the age of the growth, the breast will slowly return to the normal state. It is not recommended to squeeze the newborn’s breast, because the newborn’s body fluid immunity, cellular immune function is not developed, the local breakage may have bacterial invasion, bacteria into the blood circulation caused by newborn sepsis, purulent meningitis, infectious shock and other conditions. Therefore, there is no need for special treatment if there is no abnormality in the newborn’s breast in the clinic, but if there is abnormality, it is necessary to go to the hospital for examination and treatment.