Root canal treatment for children requires X-rays of the tooth site to determine the location of the treatment, followed by pulpotomy, root canal disinfection, and root canal filling. Root canal treatment for children is suitable for large cavities and nerve damage. Before root canal treatment for children, X-rays should be taken of the tooth to determine the treatment site, and then the decayed tooth tissue should be cleaned out thoroughly to expose the pulp cavity. An absorbable sealant is placed in the pulp cavity or root canal to seal it, and then a crown is filled. When pulpitis and periapical inflammation occur in children’s milk teeth, it indicates that the pulp of the child’s teeth has been infected and needs to be cleaned out of the infected material in the pulp cavity in a timely manner in order to get effective treatment. It is recommended that patients go to a regular hospital for root canal treatment in a timely manner. Root canal treatment for children’s teeth should be carried out as early as possible to avoid delaying the condition and leading to serious caries damage and adverse effects.