There are many types of lung diseases, mainly chronic obstructive pulmonary disease, bronchial asthma, bronchiectasis, pneumonia, tuberculosis and other diseases, the main symptoms of cough, cough sputum, dyspnea, hemoptysis and so on, the symptoms of different diseases have individualized differences. 1. Chronic Obstructive Pulmonary Disease (COPD): a common and frequent disease of the respiratory system, characterized by persistent airflow limitation, with the main symptoms of chronic cough, sputum, dyspnea, wheezing. 2. Bronchial asthma: characterized by chronic inflammation of the airways and airway hyperresponsiveness, often with a history of allergen exposure, with typical symptoms of episodic dyspnea accompanied by shortness of breath, cough, chest tightness and rales. 3. Bronchiectasis: a purulent inflammatory disease with abnormal and persistent bronchial dilatation caused by bacterial and viral infections, characterized by chronic cough, coughing up of purulent sputum and repeated hemoptysis. 4. Pneumonia: it is an inflammation that occurs in the terminal airways, interstitium and alveoli of the lungs, and can be caused by bacterial and viral infections and immune injury. Bacterial pneumonia is the most common, with symptoms of upper respiratory tract infection, such as chills, high fever, muscle aches and pains. 5. Tuberculosis: It is a lung disease caused by Mycobacterium tuberculosis infection, and the main symptoms include coughing, coughing up sputum, hemoptysis, fever, night sweats and so on. There are many other kinds of lung diseases, and those who have the symptoms of lung diseases mentioned above are advised to seek medical treatment in time, and give targeted treatment after clarifying the cause of the disease under the guidance of professional doctors.