Condition analysis: Tuberculosis is a lung disease caused by tuberculosis bacillus infection, which is highly contagious. If not treated in time, it can also be life-threatening, and the main clinical manifestations of pulmonary tuberculosis are cough, phlegm, shortness of breath, night sweats, fatigue, weight loss, elevated body temperature, coughing up blood, chest pain and other symptoms. The disease is mainly transmitted through the respiratory tract, and the body's immunity is weakened or infants and young children, pregnant women, the elderly and infirm are easily transmitted. Moreover, the treatment period of the disease is long, usually 6~9 months of medication, and individual patients need to take it for more than two years to be cured.