Tuberculosis is a chronic respiratory tract infection, and with the widespread clinical application of a series of effective anti-tuberculosis drugs such as isoniazid, rifampin and streptomycin, the cure rate for the disease can theoretically reach more than 90%. Yet what is the objective situation? In the world, in China, and in our province, the TB epidemic is still very serious. The World Health Organization points out that the world has been infected with tuberculosis 2 billion people, China has 500 million, about 30 million tuberculosis patients, 9 million new tuberculosis patients are found every year, and about 3 million deaths due to tuberculosis every year. The results of the fourth national tuberculosis epidemiological survey in 2000 showed that the prevalence of tuberculosis in our province, the prevalence of Tu-Yang and the mortality rate did not drop significantly compared with the results of the third national tuberculosis epidemiological survey in 1990. Why does the tuberculosis epidemic remain high? The influencing factors are many, one of the important reasons is that early detection and early treatment of TB has not been achieved. The onset of tuberculosis is different from many diseases. Early symptoms are very mild and do not attract enough attention. Patients often only have some weakness, poor appetite, low fever in the afternoon, night sweats, cough, etc. At this time, some patients think they have a cold and take some anti-cold medicine, and the symptoms can be relieved, so they relax the vigilance of further diagnosis and treatment; some patients think it is due to work tension and fatigue and do not pay attention to it, and it is delayed for six months or a year. Tuberculosis bacteria in the lung tissue to get sufficient nourishment, and then rapid growth and reproduction. When the lung tissues are damaged to a great extent, patients often find TB only when they go to the hospital with cough, hemoptysis, pneumothorax or serious lung infections, thus missing the early detection and early treatment.