Inflammation of dental nerve in children should be the development process of dental caries, at the beginning of tooth decay, there is no symptom in children, it is from superficial to deep, and it will cause inflammation of dental nerve only after the decay reaches the nerve. Clinically, the treatment of tooth nerve inflammation is different according to the degree of inflammation, for example, if the inflammation of tooth nerve is only limited to the crown of the tooth, live pulpotomy can be used for milk teeth; if the inflammation of tooth nerve has reached the root canal, root canal treatment can be used. If the inflammation of the nerve has spread to the outside and caused more root resorption, extraction of the tooth may be considered. Because some tooth nerve inflammation leads to root tip inflammation, it will affect the permanent tooth embryo and cause the development of the tooth embryo to be affected; we also need to do a good job of gap maintenance after extraction. Some parents don’t understand that after extraction, the tooth will be left alone, which will eventually cause the back teeth to move forward and cause a series of problems, such as no place for the new teeth to grow. In addition, some parents may ask, “Doctor, if you do root canal treatment for me, will there be any nerve left in my new tooth after the nerve necrosis? The nerve of permanent teeth will continue to develop, so I think parents should not be too anxious about this point. Therefore, parents should not be too anxious about this point. Therefore, for children’s caries, early detection and early treatment are necessary.