Patients often show dyspnea, chest distress, chest pain, cough, hemoptysis, cough up phlegm after onset. Some patients suffer from symptoms such as fatigue, emaciation, afternoon fever, night sweats, etc. If diagnosis and treatment cannot be found in time, lung function damage will be aggravated, respiratory system can be damaged in severe cases, causing a series of complications such as lung cancer, pulmonary heart disease, etc. and even affecting the life safety of patients to some extent.