White spots on permanent teeth of 10-year-old children are usually symptoms of early caries, dental fluorosis or enamel underdevelopment. 1. Early caries: If the oral hygiene environment is poor, resulting in a large number of bacteria and secretion of acidic substances, etc.; it will lead to demineralization of tooth enamel, i.e., the loss of calcium, magnesium and other minerals and thus chalky spots will appear. 2. Dental fluorosis: If you drink water containing excessive fluoride for a long time during the development of teeth, it will lead to the loss of calcium in the enamel, which will lead to the appearance of white lesions, and in serious cases, yellow or brown spots or plaques will appear. 3. Enamel underdevelopment: If the teeth are infected or malnourished during the mineralization period, it will lead to the enamel can not be normal mineralization (i.e., poor calcification) will also appear white spots. 10-year-old children with white spots on the permanent teeth is recommended to seek medical attention in a timely manner, after a clear diagnosis of the symptomatic treatment, to avoid delays in the condition.