The tooth is half empty if there is retention value, it is recommended that the root canal treatment can be staked, then repair, and finally crown restoration; if there is no retention value, it is recommended that it be directly extracted. 1. After the tooth is half empty, it is best to go to the hospital to take a dental x-ray examination, if the root is not destroyed, it is best to carry out root canal treatment, the missing area of the tooth is large, can be fixed with a fiber post or a metal post with a filling material to repair the tooth, and then finally crown restoration, so as to extend the service life of the tooth. 2. The tooth is half empty can be shot dental X-ray examination, if the root bifurcation damage, and apical inflammation is serious. It is recommended that the tooth can be extracted, and after the wound heals, dental implant restoration or fixed bridge restoration can be considered. 3. If the teeth can be retained, it is best not to extract, try to retain the teeth. Missing teeth will disrupt the chewing function and have a great impact on the use of teeth. It is recommended to consult an authoritative hospital for treatment by a professional doctor if the tooth is half empty.