Root canal treatment should not be stopped after the first seal. Root canal therapy is a treatment that is performed when the nerve of a tooth is inflamed or necrotic, and can effectively treat endodontics as well as periapical disease. However, root canal treatment cannot be stopped after the first medication seal, as this will affect the effectiveness of the root canal treatment. After root canal treatment, patients usually need to seal the medication 1-2 times, the exact number of times or the dose of medication should let the doctor make a judgment after diagnosis. After root canal treatment, attention should be paid to maintaining oral hygiene, timely brushing and rinsing. At the same time, pay attention to the affected tooth not to bite hard objects, otherwise the tooth is prone to fracture. During the root canal treatment, try not to eat spicy and stimulating food, actively cooperate with the doctor and follow up on time. If there is any discomfort during the root canal treatment, it is recommended to communicate with the attending doctor in time to avoid delaying the condition.