Pulpitis is an inflammation caused by infection of pulp tissue, mostly related to dental caries, and generally cannot be cured by itself, so the so-called 3 minutes self-healing method of pulpitis has no clinical basis. If pulpitis occurs, the patient should go to the hospital in time to clarify the condition and actively treat under the guidance of the doctor, usually the prognosis is good: 1, emergency treatment: often by opening the pulp to decompress and placing small cotton balls soaked with pain-relieving drugs such as camphor phenol and eugenol in the cavity of caries to temporarily relieve the patient’s symptoms. Chlorhexidine, hydrogen peroxide and other contained rinses also help to reduce bacterial growth and relieve inflammation, but need to be used under the guidance of doctors; 2. Treatment of reversible pulpitis: mainly caused by trauma, caries and other factors, can be treated by one-time filling, and the treatment principle is to try to preserve the pulp and teeth with normal physiological function. Before treatment, it is generally necessary to use compound chlorhexidine solution with gargle to sterilize, and if the patient is sensitive to pain, local anesthesia by Skanduni is commonly used. Conventional fillings include photosensitive calcium hydroxide filled with about 2mm, and then filled with zinc phosphate and glass ionomer in one go; 3. Treatment of irreducible pulpitis: common acute and chronic pulpitis and retrograde pulpitis, etc. Generally, active treatment can preserve the tooth, of which root canal treatment is the preferred treatment. The principle of root canal treatment is to eliminate the infection in the root canal by mechanical and chemical means, and then eliminate the inflammation in the pulp by filling the root canal and sealing the crown to relieve the patient’s painful symptoms and help restore the function of the tooth. It can be divided into multiple root canal fillings and one-time root canal fillings, and the treatment method needs to be decided according to the patient’s specific condition. In addition, live pulpotomy and pulp flattening are also commonly used for treatment. Patients should keep their mouth clean in their life to reduce bacterial growth and decrease the incidence of dental caries, which is the main measure to prevent pulpitis.