Dark skin in babies is usually caused by genetics, jaundice or poor respiratory function, and requires prompt medical treatment once detected. If the parents of a newborn baby have dark skin color, the baby’s skin will also be darker due to genetic inheritance. Secondly, the bilirubin in the body of a baby with jaundice cannot be excreted in time, thus causing the baby’s skin color to look darker. In addition, due to the newborn’s body functions are not yet mature, such as the respiratory function is not well developed, due to the body’s oxygen content is reduced so it will lead to the baby’s skin color dark performance. There may be other reasons for the dark skin of babies at birth, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.