The treatment methods of five-year-old children’s caries mainly include the following points: 1.When the milk teeth form deep cavities and become painful by hot and cold stimulation, we should remove the decaying matter, use zinc polycarboxylate cementum bedding, and apply glass ion cementum and other filling. 2.The milk teeth whose crowns are damaged and cannot be repaired, or have formed residual roots and crowns, usually can only be extracted. 3.When the permanent incisors or the first permanent molars just erupted produce caries, we should grind away 4.Brush and rinse regularly, and eat more coarse fiber food to clean the tooth surface, and stimulate the development of alveolar bone to ensure the smooth eruption of permanent teeth.