A 6-year-old child’s big teeth are broken and rotting empty, usually due to caries. According to the type of teeth to choose the appropriate treatment, if it is determined that the caries of the milk teeth, and the condition is serious, you can directly choose to extract, if it is permanent tooth caries, you need to try to surgical treatment to retain the teeth. 1. Milk teeth: 6-year-old children are in the stage of tooth replacement. If parents are sure that their children’s teeth are milk teeth, they can choose the treatment according to the actual condition. If the overall shape of the child’s teeth is not obviously defective, root canal treatment can be carried out first to avoid the continued development of the disease, to improve toothache and other symptoms, using sodium fluoride glycerin paste and other fillings, to maintain the normal function of the teeth, and wait for the replacement of teeth. If the child’s dental caries is more serious, the shape of the tooth body has obvious defects, you can directly choose to extract, and after extraction, you need to pay attention to the child to wear a gap retainer, and wait until the eruption of permanent teeth. 2. Permanent teeth: 6-year-old children will start to erupt permanent teeth from the last side of the tooth row, if the decayed big teeth are permanent teeth, you need to try to keep your child’s teeth. Parents need to take their children to the doctor for root canal treatment first. If the tooth form is not too big, it can be treated by amalgam filling, composite resin direct bonding restoration and other surgical treatments. If the child has a large tooth defect, the normal chewing function of the affected tooth will be maintained by installing a crown. If a 6-year-old child has a broken tooth that is rotten and empty, it is recommended that parents first take their child to the doctor for an examination to clarify the type of the affected tooth, and then choose the appropriate treatment under the doctor’s guidance according to the actual situation.