The diagnosis of pulmonary tuberculosis usually requires a comprehensive judgment based on clinical symptoms, pathogenic examination, and chest CT, etc. Therefore, the healing of pulmonary tuberculosis also needs to be judged from the following three aspects: First, the clinical symptoms of the patient completely disappear, such as the original symptoms of cough, sputum, low fever, night sweats, and wasting, etc., which completely disappear after regular anti-tuberculosis treatment. Second, sputum smear is negative for antacid bacilli, T-spot is negative, and blood sedimentation and C-reactive protein are within the normal range. Third, complete resorption of the original pulmonary tuberculosis lesions, or the appearance of calcified foci, or the appearance of fibrous striae, as shown by lung CT, are called healing. In addition, there is a special case that the patient’s clinical symptoms completely disappear and the sputum is negative for Mycobacterium tuberculosis, but there is still a cavity in the chest CT.