Black stains on baby’s teeth are mostly considered to be food residues or pigmentation, which can be removed by brushing and rinsing, or may be caused by underdevelopment of tooth enamel, which requires reasonable treatment in accordance with medical advice. 1. Usually, the presence of black stains on baby’s teeth is mostly considered to be related to improper oral hygiene, diet and other factors. Generally, infants can remove the stains by rinsing or brushing their teeth, and no special treatment is needed. However, parents still need to pay more attention to the infant’s oral environment, pay more attention to the infant’s oral hygiene, and reasonable feeding. 2. For enamel hypoplasia caused by baby teeth with black stains, not only need to strengthen the baby oral hygiene, but also need to pay more attention to the baby’s nutritional supplements. Mild to moderate enamel hypoplasia can be restored by fluoride coating or light curing, and if the infant’s symptoms are more serious, it is also necessary to use nail fixation restoration or artificial crown restoration. It is recommended that parents pay more attention to the state of the child’s teeth, if the baby teeth have black stains, you need to rule out physiological phenomena, if it is caused by disease, but also need to actively seek medical attention.