Tuberculosis screening skin test and chest X-ray does not exist which one is better, both belong to the routine auxiliary examination. 1. Skin test: tuberculosis skin test is also known as tuberculin test, through the tuberculin test to check the reference of whether the infection of tuberculosis, but is not a means of diagnosis, but a routine screening. 2. Chest X-ray: it is a kind of imaging examination, which can check whether there is any imaging abnormality in the lungs through chest fluoroscopy, and it can also refer to whether there is tuberculosis or not, but simple chest X-ray cannot confirm the diagnosis of the disease. Whether it is skin test or chest X-ray, if there is any abnormality in the examination, it is necessary to go to the hospital for further examination, combined with clinical symptoms, as well as sputum culture of tuberculosis bacteria, chest CT and other auxiliary tests to confirm the diagnosis.