If a newborn baby has purple lips, it is also a relatively common condition, it is likely that lack of oxygen causes purple lips, or poor cardiopulmonary function, which may also cause purple lips. 1, because the newborn is still in the process of production, it is likely to cause extrusion or lack of oxygen, resulting in purple lips, are relatively common symptoms, if the lips continue to purple bad, should also pay attention to check, so as to prevent the triggering of other diseases. 2, some newborns with congenital heart disease or poor cardiopulmonary function may also cause purple lips, so after this phenomenon, for safety reasons, it is best to go to the hospital to check, and should pay attention to the child to maintain a good sleep environment, do not often noisy. 3, after the appearance of purple lips may also be caused by lack of oxygen, so during this period can also do an ultrasound examination, which can help better confirm the condition, can also help better treatment, usually should pay attention to understand, so as to ensure the health of the child. Parents, if a newborn baby has purple lips, it is likely to be hypoxic, more likely to be congenital heart disease or poor cardiopulmonary function, so it is best to check during this period, and should pay attention to find a doctor to watch.