Newborns’ nipples should not be squeezed, whether they are boys or girls. Some babies are born with a large amount of lactogen from the mother’s body, the chest will be within a few weeks of birth, become swollen, hard, and some will even flow a few drops of milk, nipples with small white spots, this is due to the influence of estrogen, resulting in the accumulation of local sebum and become, this is a normal physiological phenomenon. This is a normal physiological phenomenon. The swelling of the breasts will generally subside within a few months, and parents should not use their hands to squeeze. Due to the delicate skin and weak resistance, squeezing the nipple can easily lead to infection, affecting the normal development of the mammary glands, and may seriously affect the consequences of the girl grow up to be a mother and can not be normal breastfeeding, which will bring unnecessary harm.