Most patients who have had tuberculosis do not have sequelae, and only a few severe cases have sequelae. The common sequelae are decreased lung function and shortness of breath after activity. Patients with TB who follow medical advice and are treated with reasonable and standardized medication generally have a good prognosis, and most can be cured, with symptoms usually beginning to subside after 2-3 weeks of treatment. Without reasonable treatment the infection may worsen and spread from the lungs to other body parts and evolve into disseminated disease, which can even be life-threatening. Therefore, when treating TB patients, it is important to follow the principles of early, regular, reasonable, appropriate and combined medication. Regular use of medication under the guidance of a doctor ensures that the occurrence of drug resistance is reduced and the goal of sterilization as well as prevention and elimination of recurrence is achieved.