Usually patients with pulpitis will have pain for 1-3 days when the pulp sealing is performed for the first time, this pain is not very intense, it is a kind of swelling and whirring, slurping pain sensation, which can be tolerated by the patient. If the patient’s pain is more sensitive, it is recommended that the patient should take oral anti-inflammatory drugs or add painkillers to alleviate the pain sensation of killing the nerve, usually in the process of killing the nerve, the use of lactobacillus inactivation agent, which is a slow-release drugs, gradually act on the nerve site, through the surface all the way to the deep penetration of the pain, this pain can generally be accepted, there is no particularly intense pain sensation.