The black color of the new teeth of children may be pigmentation, caries, endodontic lesions, etc., which can be improved by correcting the diet and brushing habits, or treatment such as fillings, root canal treatment, open pulp drainage. 1. Hyperpigmentation: If there is hyperpigmentation on the surface of the teeth, it will easily cause the new teeth to turn black, usually no special treatment is needed, eat less food containing pigmentation, and brush your teeth diligently to maintain the cleanliness of the oral cavity. 2. caries: if the child suffers from caries, there will also be teeth black phenomenon, mostly due to bacterial infection caused by the hospital in a timely manner for the appropriate treatment, the most common is to remove the carious part, and then fillings. 3. Pulpal lesions: mainly due to inflammatory lesions or necrosis of the pulp, in addition to the blackening of the tooth, the patient may also have pain, tooth loosening and so on. The commonly used treatment is root canal therapy. It is recommended to take the child to the hospital for examination in time, and after clarifying the cause, professional treatment will be carried out under the guidance of the doctor.