One year old babies with white pieces on their teeth is a symptom of demineralization of teeth, which requires good oral care and preventive treatment such as fluoride application. One year old babies due to the age of small most not weaned and with the situation of drinking night milk, and one year old babies to do routine oral care is more difficult, so it is easy to lead to a large number of bacteria in the oral cavity, and its interaction with the food produced by the acidic substances that lead to the teeth within the mineral water and make the teeth color change, chalky white patches appear. The above symptoms must first of all parents of the baby good oral care, while trying to avoid the baby drink night milk; in addition to medical treatment can be applied fluoride and other preventive treatment, fluoride can make demineralization of the teeth remineralization can be effective in preventing dental caries.