Tuberculosis, commonly known as "pulmonary tuberculosis", is a highly contagious chronic wasting disease caused by the invasion of Mycobacterium tuberculosis into the human body. It is not affected by age, gender, race, occupation, or region. Many organs and systems of the human body can be infected with tuberculosis, among which pulmonary tuberculosis is the most common. More than 90% of pulmonary tuberculosis is transmitted through the respiratory tract. Tuberculosis patients cough, sneeze, and shout loudly, causing droplets containing tuberculosis bacteria to be sprayed out of the body, and healthy people are infected after inhaling them. Its typical manifestations are: coughing, sputum, hemoptysis, chest pain, and difficulty breathing. It is a chronic infectious disease that has a long history of endangering human health. It once spread all over the world and caused millions of deaths. my country is now one of the 22 countries with a high burden of tuberculosis in the world, and the number of tuberculosis patients ranks second in the world, second only to India. At present, there are an estimated 2 million infectious pulmonary tuberculosis patients in my country.