If the white skin on the skin of the mouth of the newborn is caused by physiological phenomena, it is normal. If it is caused by thrush or chronic non-specific lipitis, it is not normal. There are many reasons for the white skin on the newborn’s mouth, need to be based on the specific circumstances to determine whether it is normal or not, can not be generalized, there are obvious individual differences. If the newborn is in a dry environment for a long time, or their own lack of water, to a certain extent, are prone to cause newborns on the skin of the mouth on the white skin, is a normal physiological phenomenon, do not have to worry too much. However, if the white skin on the newborn’s mouth is caused by disease, it is not normal, usually in the clinic is mostly seen in thrush, chronic non-specific lipitis and other diseases. Thrush is mainly caused by oral candida infections; the etiology of chronic non-specific labiitis is unclear, and may be related to factors such as lip licking, lip biting and other bad habits. It is recommended to take your baby to the neonatology clinic regularly to follow up on your baby’s growth and development, and intervene as prescribed by your doctor if necessary.