Abstract: Pulmonary tuberculosis is a chronic contagious disease caused by the infection of mycobacterium tuberculosis. It is recognized as a major public health problem and one of the top ten causes of death worldwide. Early accurate diagnosis is the key to reduce the spread of pulmonary tuberculosis and lower the incidence and mortality. Therefore, it is of great significance to establish a set of imaging diagnostic criteria for tuberculosis. Based on the methodology formulated by evidence-based medicine guidelines and standards, this standard has been referred to the 2011 evidence grading standards of evidence-based medicine center of Oxford University and the methodology formulated by the working group recommendation of international grading of Recommendations Assessment, Development and Evaluation（GRADE）. Collectively, the final recommendation was formulated according to the tuberculosis diagnostic standards issued by the National Health and Family Planning Commission on November 9^th, 2017. This standard covers the imaging manifestations, suspected cases, imaging diagnostic cases, diagnostic criteria and imaging differential diagnosis of primary pulmonary tuberculosis, hematogenous disseminated pulmonary tuberculosis, secondary pulmonary tuberculosis, tracheobronchial tuberculosis and tuberculous pleurisy, providing scientific evidence for the clinical imaging diagnosis and differential diagnosis of pulmonary tuberculosis.

Key words: Pulmonary tuberculosis, Imaging diagnostic, Diagnostic criteria