Baby lips have white skin may be due to mouth ulcers, thrush, milk clots in the mouth several phenomena. 1. Mouth ulcers: mouth ulcers are a common factor in the appearance of white skin inside the baby’s lips, usually caused by viral infections, there are some babies because of zinc deficiency, iron deficiency is also prone to mouth ulcers, the main symptom is the appearance of white skin on the inside of the lips, touching the pain. 2. Thrush: the baby’s mouth has a fungal infection, there is white secretion, the phenomenon of white skin, and white film-like material is difficult to wipe off. 3. Milk clots in the mouth: if the baby in the breastfeeding period, it will make the lips look white, at this time the baby’s mouth will exist inside the white skin, gently wipe with water can be, without special treatment. The baby lips have white skin, it is recommended to go to the hospital in time for relevant examination, clear cause and timely treatment.