The effectiveness of intravenous therapy for pulpitis is not good. Firstly, pulpitis is an inflammatory pain caused by bacterial infection of the dental nerve. If the inflammation is confined within the root canal and does not spread to cause a systemic gap infection, then the effect of intravenous therapy is poor. Intravenous therapy is just an auxiliary treatment that circulates through the body to reach the tooth tissue, and its effect might not be very noticeable. The primary treatment for pulpitis should involve treating the tooth, removing the infected dental tissue. If the dental nerve is not fully exposed, soothing treatment can be performed, which is also a nerve-preserving treatment method for reversible pulpitis. If the decayed tissue is removed and the dental nerve is exposed, indicating that bacteria have infected the dental nerve, soothing treatment is not possible, and root canal treatment of the tooth is necessary. Only then can the symptoms of pulpitis be alleviated.