When one and a half year old babies have caries, the following treatment measures can be taken: I. Parents help their babies clean the surface of the teeth and develop the hygienic habit of brushing and rinsing the teeth in time after meals. Second, adjust the baby’s diet structure, eat less food containing too much sugar to avoid caries expansion. Third, the formation of superficial caries in the anterior teeth, can be adjusted to grind the edge of caries, improve the cariogenic environment after coating sodium fluoride and other drugs to enhance the hardness of the enamel. Fourth, when deeper cavities or pulpitis occur in multiple teeth of the baby, it is difficult to cooperate with the treatment due to the baby’s young age. It is best to complete the caries filling and root canal treatment of all teeth at once under general anesthesia to reduce pain. When large caries are formed in baby teeth, metal pre-formed crowns can be used directly for restoration.