For pulpitis and periapical inflammation of milk teeth, root canal treatment is also recommended as early as possible to protect the milk teeth from further inflammation. For the pulpitis and periapical inflammation of milk teeth, if not treated as early as possible, it may cause damage to the permanent teeth below, resulting in Turner’s teeth of permanent teeth, and also the caries of milk teeth is too serious, which may cause the early loss of milk teeth, resulting in the lack of position of permanent teeth erupting below, thus causing the situation of uneven teeth. Therefore, it is not only possible to perform root canal treatment for milk teeth, but also recommended to do so as early as possible once needed.