Pulmonary disease is a general concept, and any disease that occurs in the lungs can be broadly divided into infectious lung diseases, chronic airway inflammatory diseases, lung tumors, and interstitial lung diseases, as follows: 1. Infectious lung diseases: Common diseases include bacterial pneumonia, pulmonary tuberculosis, and the early manifestations of the disease are mainly cough, sputum, and fever. 2. Chronic airway inflammatory diseases: Common diseases include chronic Bronchitis, chronic obstructive pulmonary emphysema, bronchial asthma, etc. The early symptoms are mainly cough, coughing, chest tightness, shortness of breath. 3, lung tumors: the early manifestations of the disease are mainly cough, coughing, and some patients can also have cough as the first symptom. 4, interstitial lung disease: the early manifestations of the disease are mainly cough, and can also be exertional shortness of breath as the first symptom.