The baby’s teeth at birth are called birth teeth. These birth teeth are exposed from the gums at birth because the germ of the milk tooth is located very superficially under the mucous membrane of the gums. The roots of these teeth are not yet developed, and they are clinically very loose and may be accidentally sucked and swallowed, and may fall into the mouth when the child drinks milk, resulting in the risk of accidental sucking and swallowing. In addition, the birth tooth must be distinguished from the horse tooth, which refers to the white dots on the surface of the gum when the child is born, and these white dots are slightly higher than the mucous membrane and a little hard to touch. Generally, it does not need to be treated, and it can fall off on its own after a few months, and the child will not feel uncomfortable.