Many children are born when the elderly ask to squeeze the baby’s nipples, so do newborns’ nipples need to be squeezed? In fact, it is a wrong habitual practice to squeeze the nipples for newborns. Some baby girls and a few baby boys in the 4-7 days after birth can appear breast enlargement, such as fava beans or walnut size, and even a small amount of milk secretion, this is because the baby was just born when the body still has a certain amount of estrogen, progesterone and prolactin from the mother, more than 2-3 weeks after birth can naturally subside. Some parents are wrong to squeeze their newborn’s nipples in order to avoid their child’s nipple inversion, which can cause harm to the newborn. Squeezing the nipples of newborns, if inadvertently squeeze the nipples, will bring in bacteria, causing redness and inflammation of the mammary glands, and in serious cases may even cause sepsis, septic meningitis and other serious diseases. In the case of a baby girl, squeezing causes inflammation of the mammary glands and blocks some of the milk ducts, which can affect milk production in adulthood. Squeezing the nipple to the newborn is also easy to scare the baby, the newborn just born to the baby this sudden pain, not only will cause the baby to scream loudly and cry, but also from then on to the baby’s psyche to produce a sense of oppression, serious will cause the baby’s panic, resulting in future emotional susceptibility to tension. In addition, parents do not have to worry that not squeezing the nipple during the newborn period will cause future maternal nipple invagination. The occurrence of maternal nipple invagination is related to nipple development and whether or not the nipple is well cared for during pregnancy, but not directly related to whether or not the nipple is squeezed during the newborn period.