Clinically, the color of sputum coughed up by pulmonary tuberculosis is not generally judged by the condition. There is a big difference between white sputum and yellow sputum in pulmonary tuberculosis. If yellow sputum is present, clinically it is considered to be caused by bacterial infections such as Streptococcus pneumoniae and Streptococcus pyogenes, and the yellow color of sputum is mainly due to the pigmentation produced by the mixing of apoptotic leukocytes with bacteria. If there is white sputum, clinically, it is considered to be caused by a variety of pathogens such as viruses, mycoplasma, candida and other pathogens that cause the body to immunize through leukocytes. Tuberculosis is a serious auto-consumptive disease, patients often have low immunity to respiratory pathogens, the need for comprehensive diagnosis and treatment, if further sputum coughing symptoms, the need for timely sputum culture and other tests to clarify the cause of the disease, targeted medication, and active exercise to improve their immunity.