The treatment measures for baby teeth blackening include the following points: 1.Polishing and grinding head: When a large amount of black pigment is attached to lip surface and tongue surface, it can be removed by applying polishing and grinding head, dipping it in polishing paste and then rubbing it slowly, and it can also be removed under sandblasting. 2.Friction removal: When a large amount of exogenous pigment is adhered to the adjacent surface of teeth, it can be removed by applying smooth turning needle or diamond sand piece friction. 3.Remineralization: When baby likes to eat too sticky and too sweet food When superficial caries is caused, it is possible to grind the edges and rub the fluorine containing drugs such as sodium fluoride to promote enamel remineralization and avoid the expansion of caries. 4.Filling: After the cavity is formed in the baby tooth, it is possible to grind away the discolored tooth tissue and apply composite resin to fill it. 5.Repair: When the pulp of the baby tooth is necrotic and the tooth is blackened, it is possible to grind open the pulp cavity, remove the pulp, flush the root canal with hydrogen peroxide solution, use calcium hydroxide paste to seal the canal cavity and repair the defect.