When children’s teeth are black, first of all, the cause of black teeth should be clarified through clinical examination, followed by symptomatic treatment. The common reasons for children’s black teeth include pigmentation on the tooth surface, tooth decay, accompanied by black performance, pulp lesion, after producing pulp necrosis, the color of teeth will also be black, so there are different treatment methods for these three cases, as follows: 1, pigmentation: if the tooth surface pigmentation causes black teeth, you can brush your teeth well, usually eat less food with pigment etc., after each meal to help children clean mouth, clean the surface of the teeth, you can get rid of the surface pigmentation. As the child’s age increases, the ability of self-care is also better, brush teeth more seriously can be improved, wait until 6-7 years old after the basic can accept the scaling treatment, can also be cleaned to get rid of tooth surface pigmentation; 2, caries: If the tooth is black due to caries, we should carry out filling treatment, do a good job of reassuring the child, can carry out filling treatment; 3, pulp lesion If the pulp of the tooth is diseased, the pulp of the tooth is necrotic, causing the color of the tooth to change and blacken, this situation requires root canal treatment. So for the case of blackened teeth in children, we must clarify the cause of the blackening and then carry out symptomatic treatment.