The treatment methods for toothache of worm tooth are as follows: 1.When there is no condition to go to hospital, you can temporarily take oral pain medication to temporarily relieve tooth pain. In addition, containing cold water can also play a pain relief effect; 2, if the tooth is sensitive to acid, sweet, cold and hard, it is usually considered as moderate caries, and the treatment method of removing decayed tissue and filling restoration can be adopted. The clinical often choose silver mercury, composite resin, according to different conditions, sometimes can also take the way of inlay to fill, the doctor can choose the suitable method to treat according to the patient’s worm tooth situation; 3, if the worm tooth appears night pain, paroxysmal pain, at this time the caries often affects the pulp, that is, the nerve. At this time, root canal treatment, commonly known as nerve extraction, is needed to remove the necrotic nerve and decayed tissue together, and then the root canal is filled tightly, and finally the tooth is protected by braces. In conclusion, all painful worm teeth need to be treated in hospital no matter what the degree is. However, there are some special cases, such as elderly people with heart disease, or the presence of maxillary sinus pain, trigeminal neuralgia, etc., which are more similar to toothache and need to go to the hospital for relevant identification.