Two-year-old baby teeth with white spots may be tartar, early caries, underdeveloped tooth enamel or fluorosis, etc. The situation of each baby teeth is different. When the white spot appears, it should be paid great attention to solve the white spot problem in time. 1.Tartar: the baby’s teeth surface is not cleaned properly after eating, the soft scale accumulates on the tooth surface, and the white spot appears, pay attention to keep oral hygiene in the future, generally can be eliminated; 2.Early caries: the white spot of baby teeth may be caused by caries, some babies have the habit of drinking milk at night, and also bite the pacifier Some babies have the habit of drinking milk at night and chewing on the pacifier to sleep, and some parents do not brush the baby’s teeth, all these are easy to lead to the appearance of tooth decay. The performance of early caries is mainly enamel demineralization, and there will be white spots on teeth. The treatment method of early caries is relatively simple, the dentist will check the specific caries site and depth with the probe and naked eye in the professional dentistry. After determining the caries site, apply dental high-speed turbo drill to remove the caries site cleanly; 3, enamel hypoplasia: caused by the mother’s calcium deficiency during pregnancy, the mild one only has the change of tooth color and transparency, the enamel layer shows chalky patches or plaques, the light transmittance is poor, the severe enamel hypoplasia can show different degrees of defects on the enamel surface. It is recommended to develop the habit of brushing teeth every morning and evening, and eat less sweets and drinks and other foods; 4. Dental fluorosis: If the fluoride content in the water you drink is high, dental fluorosis will easily appear. For dental fluorosis, the ideal is to do a good job of prevention and optimize the water quality of drinking water to avoid this disease. For dental fluorosis that has occurred needs to go to professional dentistry for treatment.