Children with cavities in their teeth choose remineralization treatment, filling and restoration, indirect pulp capping, root canal treatment, extraction and other treatment measures according to the situation. 1. Remineralization treatment: tooth cavity caries is limited to enamel, there is no pain from hot, cold, sour or sweet stimulation, remineralization restoration to restore the tooth tissue to normal. 2. Filling and restoration: If there is a hole in the tooth with pain from hot, cold, sour or sweet stimulation, direct filling or filling after cushioning will be chosen according to the situation. 3. Indirect pulp capping: If the necrotic tooth tissue in the cavity is cleaned up to be close to the pulp or there is a small perforation of the pulp, indirect pulp capping is needed, and calcium hydroxide paste is commonly used to promote the return of the pulp to normal. 4. Root canal treatment: After the necrotic tooth tissue in the cavity is cleaned up and the nerve is exposed, root canal treatment is performed on milk teeth and apical induction plasty is performed on young permanent teeth. 5. Extraction: the cavity of the milk tooth close to replacement is deeper and only the root is left, in this case, the milk tooth will be extracted to make the gap keeper, in order to ensure the normal eruption of permanent teeth. Children’s teeth have holes in time to take the child to the hospital, according to the professional physician’s examination and diagnosis, choose the best treatment plan, in order to prevent further deepening of dental damage.