Patients with mucopurulent sputum, what tests need to be done, let’s take a look at the following: a. History Understanding the observation of the amount of sputum color odor trait can often suggest the diagnosis. 1, trait mucopurulent sputum sputum trait between mucus sputum and purulent sputum, sputum in addition to mucus there is a part of pus with yellow-white rich viscous; common in bronchitis, tuberculosis, inflammation in the lungs, etc., which is due to the formation of pus in the inflammatory process of lung tissue, and at the same time there is a large amount of mucus secretions mixed. 2.Sputum volume The diseases with high sputum volume include: pulmonary edema, lung abscess, bronchial dilatation, alveolar cell carcinoma, abscess chest or belly abscess, formation of bronchial fistula, etc. The examination of sputum volume is generally based on 24h, and the increase of sputum volume reflects the progress of inflammation of bronchus and lung; sputum cannot be expelled smoothly, and although clinically the sputum volume is reduced, in fact the disease is still developing and the symptoms of poisoning will be aggravated. 3.Odor The general sputum has no odor, and when it is placed for a long time, it produces odor due to the decomposition of bacteria in the sputum, and the sputum has bad smell when anaerobic bacteria are infected, which is seen in the late stage of lung in gangrene, lung abscess, bronchial dilatation, and bronchopulmonary cancer. Second, combined with various examinations Relevant physical examinations can be performed on the patient, and if necessary, relevant instrumental examinations can be performed to further help the diagnosis. Bacterial culture test