Theoretically, the teeth affected by bottle caries are all milk teeth, which are two pairs of teeth with permanent teeth, and when the milk teeth are replaced by permanent teeth, the bottle caries will be solved naturally. This is only an ideal state, and the premise is that the bottle caries itself is not serious, or has been treated well, but if the baby has bottle caries, if it is not treated properly as soon as possible, it is possible to affect the permanent teeth. It is because most of the children who suffer from bottle caries are of low age, before 3 years old. If the caries of milk teeth is not treated as soon as possible, it will cause the caries of all milk teeth in a large area, and may even cause the loss of most of the milk teeth in the whole mouth. Severe decay of milk teeth will cause chronic apical inflammation of milk teeth, which may cause the crown of permanent teeth to develop poorly and form the permanent teeth of Turner’s teeth. And the early loss of milk teeth will cause the lack of space for the eruption of permanent teeth, resulting in the misalignment of permanent teeth after eruption. From this point of view, bottle caries also needs to be treated as early as possible, rather than waiting for its replacement, because this is often more than worth the loss.