X-rays can make preliminary judgments on most cases of tuberculosis, but relatively speaking, CT is better than X-rays, so some patients can further investigate lung CT when they consider the possibility of tuberculosis through X-rays, which can make better judgments on the disease. The gold standard for the diagnosis of tuberculosis is the detection of tuberculosis bacteria in sputum, and X-ray chest radiographs can detect tuberculosis lesions at an early stage, which is also of great importance in the diagnosis of tuberculosis. If a patient presents with respiratory symptoms such as cough, sputum, hemoptysis, night sweats, emaciation, and weakness, a preliminary judgment can be made by X-ray chest X-ray, followed by sputum TB smear examination to clarify the diagnosis of TB.