The worm tooth, also called caries, is one of the common and multi-infested diseases of human beings, and among the incidence of various diseases, caries ranks the first. However, it is not easy to attract people’s attention because its disease progresses slowly and does not endanger people’s life in general. When teeth are damaged for a long time and not repaired in time, they will fall off gradually, then our chewing efficiency decreases, food can’t be chewed and grinded by teeth sufficiently, gastrointestinal can’t play their digestion and absorption ability better, our organism can’t get sufficient nutrition, and over time, our health quality decreases! So, what should we do? First of all, we should brush our teeth carefully and do the good habit of rinsing our mouth after meals. This is one of the most effective ways to prevent caries. Secondly, we should do oral examination in professional institutions regularly, and treat the caries as early as possible once it is found, otherwise, the lesion will cause pulp disease, periapical disease, and even jaw bone lesion after it develops to the deep part of the tooth, which will greatly affect our quality of life.