Whether bronchial tuberculosis is still contagious after 8 months of medication requires tests to determine whether it may or may not be contagious. For example, sputum culture and sputum smear show Mycobacterium tuberculosis. Positive sputum Mycobacterium tuberculosis and tuberculin test results. Or the blood sedimentation and C-reactive protein indexes are abnormally elevated. The manifestation of chest CT is patchy, cloudy and flocculent distribution, and some of them show gross glassy lesions or fibrotic lesions, see striated shadows, and may form cavities. There may also be a possibility of infection in this condition. If sputum culture and sputum smear did not detect Mycobacterium tuberculosis. Sputum mycobacterium tuberculosis and tuberculin test results are negative. As well as chest CT shows that the lesion has disappeared or shrunken, with localized fibrous streaks and calcified foci. This condition is usually no longer infectious. After the discovery of tuberculosis should be treated as soon as possible, it is recommended that the patient in the period of taking medication, discomfort symptoms should be timely medical examination, in accordance with the doctor’s instructions for treatment.