Small white spots on the teeth may be caused by dental calculus, enamel hypoplasia, fluorosis or caries. According to different causes, we should choose supragingival cleaning, subgingival scraping, abrasion coating, erosion coating method, composite resin restoration, bleaching treatment or filling. 1. Dental calculus: It is due to the usual lack of attention to hygiene, resulting in plaque deposition on the surface of the teeth. Attention should be paid to oral hygiene, such as the formation of more dental calculus, can be carried out first on the gingival cleaning, mainly the use of sonic scaling or the use of scaler scaling dental calculus clean. Then carry out subgingival scraping, and supragingival scaling is more or less the same. 2. Enamel hypoplasia: It is related to the abnormal development of teeth, such as long-term lack of vitamin A, vitamin D, causing enamel hypoplasia, easy to make the teeth appear small white spots. At present, the required nutrients should be supplemented in time. If abnormal tooth germ formation occurs, it is recommended to use fluoride toothpaste to clean the teeth to reduce the formation of caries. 3. Dental fluorosis: it is related to excessive fluoride intake during the period of enamel development. At present, it is necessary to grind or use acid etching coating method to remove the fluorine spots on the teeth, and if necessary, composite resin can be utilized for restoration, and veneers can also be chosen for restoration. 4. Dental caries: small white spots on the teeth may also be caries. It should be examined by a doctor in time and filled if necessary. If there are small white spots on the teeth, you should first understand the cause of the disease and then symptomatic treatment, the specific treatment should follow the doctor’s instructions.