The whole process of root canal treatment mainly includes the steps of opening the pulp, root canal preparation, root canal disinfection and root canal filling, and the specific cost is related to the number of root canals, usually ranging from 500~3000 RMB. 1. Root canal treatment is a common form of oral treatment, the whole process mainly includes the steps of pulp opening, root canal preparation, root canal disinfection and root canal filling, etc. Among them, pulp opening is to drill a hole in the occlusal surface of the tooth, so as to allow instruments to enter into the pulp smoothly, and root canal preparation is to remove the contents of the root canal and rinse the root canal, and then root canal disinfection is carried out. 2. As for root canal filling, the root canals are tightly filled with dental cement and paste so that bacteria cannot re-enter the root canals. 3. The cost of this type of treatment is mainly related to the number of root canals, and usually it costs about $300 to $500 for one canal. Therefore, if the procedure requires 2-3 root canals, then the cost will be about $1000~2000. However, if there is more severe inflammation inside the gums and multiple root canals are needed, then the treatment cost will increase and will be around $2,000 to $3,000. During the treatment period, patients should do a good job of cleaning their mouths, brushing their teeth in the morning and evening, and paying attention to their diets, not eating too hard food.