There are many reasons why one year old babies have white spots on their nails, such as lack of nutrients in the body, nail trauma, parasitic infections and so on. 1. the lack of nutrients in the body: the baby usually partiality, picky eaters, will lead to insufficient intake of nutrients in the body, so that the lack of iron, calcium, zinc and other nutrients, thus affecting the growth and development of children, so that the baby’s nails nutritional deficiencies and the emergence of the performance of the white spots. 2. Nail trauma: If the baby’s finger nails encountered extrusion or impact, it will lead to poor blood circulation in the local nails, thus the symptoms of white spots on the nails. 3. Parasitic infection: the body suffers roundworm and other parasitic infections, will lead to roundworm absorption of nutrients in the body, so that the body’s nutritional deficiencies and the emergence of white spots on the nails of the symptoms. In short, there are many factors that can cause white spots on baby’s nails, and you should go to the hospital to get a clear picture of the cause.