There are small white spots on the teeth to prevent tooth decay, this situation is generally due to enamel underdevelopment, surface demineralization and other reasons, it is recommended to go to the hospital in a timely manner to check and do early anti-caries treatment. 1. Teeth with small white spots may be mild enamel underdevelopment, the general surface will also have a small concave point, probing uneven performance. Usually need to be coated with sodium fluoride to prevent caries, if there are large changes need to be filled as early as possible treatment. 2. Surface demineralization: frequent drinking of carbonated beverages, not paying attention to oral hygiene will lead to surface demineralization of the teeth, the formation of small white spots, further development will form cavities, at this time can be remineralization treatment. It is recommended to pay attention to eating habits and brushing habits, and go to the hospital in time for treatment when abnormalities occur.