The common diagnostic tests for tuberculosis are: 1.Interrogation of medical history and symptoms, physical examination. 2.Chest X-ray, CT and other imaging examinations. 3, sputum smear antacid staining to find antacid bacilli. 4.Sputum culture to find Mycobacterium tuberculosis. In recent years, the development of rapid culture, identification and drug susceptibility testing technology of Mycobacterium tuberculosis has greatly reduced the time required for the original culture. 5.Tuberculin (now generally use PPD) test. 6.Tuberculosis antibody test by blood sampling. 7.Tuberculosis-specific reactive T-cell cytokine release assay such as T-SPOT and QuantiFERON-TB assay can help identify Mycobacterium tuberculosis infection and distinguish it from BCG vaccination and most other non-tuberculous mycobacterial infections. 8, Mycobacterium tuberculosis polymerase chain reaction (TB-PCR) + probe test. Mycobacterium gene-chip examination technology, nested PCR + reverse dot hybridization mycobacterial identification and drug resistance gene detection technology carried out in recent years have shortened the time for Mycobacterium tuberculosis identification and drug sensitivity testing to only a few hours, providing convenience for timely and rational treatment of drug-resistant tuberculosis. 9.Fiber bronchoscopy, including bronchoscopic biopsy, brush examination, bronchoalveolar lavage or flushing fluid to obtain specimens for bacteriological, cytological and pathological examination. 10.Phage analysis method of clinical specimens. 11.Percutaneous puncture for lung histopathological biopsy. 12.Pathological biopsy of extra-pulmonary lymph nodes or other organs.