Bad teeth are most commonly seen in children when caries occurs. Children with bad teeth should have their teeth examined in a timely manner and treated according to the severity of the tooth decay. The treatments include general treatment, surgery and medication. If only small black spots appear on the upper side of the teeth, caries in the enamel or root surface of the bone layer, no discomfort, generally do not need special treatment, pay attention to oral hygiene, to develop the morning and evening after meals to brush the teeth of the good habits, reduce snacks and the intake of sweets, and regular checkups in the hospital. Preventive measures such as fluoride application and fissure sealing can be taken to reduce the incidence of caries. If your child has severe dental caries and obvious cavities, the doctor can remove the decayed tissues and then fill the cavities. If accompanied by severe pain, pulpitis is present and root canal treatment should be performed. Crown restoration can be carried out at a later stage according to the doctor’s recommendation. It is recommended that children with broken teeth should go to the hospital stomatology department in time to find out the condition, so as not to delay the treatment.