1. lobar pneumonia: Inflammation mainly caused by Streptococcus pneumoniae with diffuse fibrinous exudation in the alveoli, usually involving all or most of the large lobes of the lung. 2. lobar pneumonia: acute purulent inflammation caused mainly by Streptococcus pyogenes, with the lobules of the lung as the lesion unit, the lesion is often centered on the fine bronchi, so it is also called bronchopneumonia. 3, hyaline membrane: alveolar cavity exudate of plasma exudate often concentrated into a thin layer of red-stained membrane attached to the alveolar inner surface. It can lead to impaired lung ventilation and alveolar collapse. 4, COPD: is a collective term for a group of chronic airway obstructive diseases, characterized by damage to the lung parenchyma and small airways, resulting in chronic airway obstruction, increased respiratory resistance and pulmonary insufficiency, including chronic bronchitis, bronchial asthma, bronchiectasis, and emphysema. 5, ARDS: Acute respiratory failure syndrome characterized by progressive respiratory distress and hypoxemia that occurs when the whole body is severely traumatized, infected, or has severe intrapulmonary disease. 6, NRDS: newborns are born only a few minutes or hours after a short period of natural respiration occurs progressive dyspnea, cyanosis and other symptoms of acute respiratory distress and respiratory failure.