The appearance of small white spots on the teeth is mainly due to tooth demineralization, which may be due to abnormalities in tooth development, caries, and chronic dental injuries. 1. Abnormalities in tooth development, such as underdevelopment of tooth enamel, dental fluorosis, etc., the enamel on the surface of the teeth is not fully mineralized, resulting in the appearance of chalky white spots. 2. Tooth enamel is composed of organic matter and inorganic substances such as calcium. Caries is a bacterial fermentation that produces acid, which breaks down the enamel, resulting in white spots. 3. Teeth chronic injury, such as acid erosion, tooth enamel repeatedly by such as cola and other acidic beverages soaked, calcium ions in the enamel free, the formation of softer organic matter, so that is white dots. Small white spots on the teeth may also have other pathological factors, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.