Coughing up sputum in patients with pulmonary tuberculosis may be a combination of infection, bronchiectasis, etc., or caseous necrosis may have occurred. Tuberculosis is a relatively common chronic infectious disease in respiratory medicine, clinically generally manifested as low fever in the afternoon, cough, sputum, hemoptysis, dyspnea, chest pain, etc. Tuberculosis patients generally cough sputum less, mostly white mucous sputum, when the patient caseous liquefaction of necrosis can be yellow pus sputum, when the combination of infections or bronchiectasis can also be coughing yellow pus sputum. Clinical diagnosis of tuberculosis is the main method of sputum mycobacterium tuberculosis culture, once diagnosed need to follow the early, regular, full, appropriate amount of combined treatment principles for treatment, to minimize the tuberculosis bacillus on the lungs damage, to avoid the occurrence of other complications.