Children’s teeth are rotten, can be dealt with by the following methods, such as extraction, fillings, root canal treatment and so on. 1. Extraction: If a child’s tooth has rotted to the point where only the root is left, the tooth needs to be extracted, and if it is a long time before the permanent tooth grows out, it needs to be made into a gap keeper to prevent the two sides of the tooth from growing in the middle, which affects the growth of the permanent tooth. 2. Filling: If the tooth can be filled, it is recommended to carry out filling treatment first, after cleaning the decayed tooth tissue in the decayed tooth, it will be filled. 3. Root canal treatment: If there is severe pain in the tooth, most of the time it is due to dental debris or plaque adhering to the tooth, which affects the pulp of the tooth, and in this case, root canal treatment is needed. Parents are advised to bring their children to the dental hospital as soon as possible to clarify the cause of the disease, and then take the appropriate method of treatment to address the cause of the disease.