Pulmonary hyperinflation is a pathological condition in which the airways at the distal end of the terminal fine bronchi (respiratory fine bronchi, alveolar ducts, alveolar sacs and alveoli) are hypoelastic, hyperinflated, inflated and have increased lung volume or are accompanied by destruction of the airway walls. Always pay attention to prevention in daily life. 1, quit smoking. 2, pay attention to keep warm, avoid getting cold and prevent cold. 3.Improve environmental hygiene, do a good job of personal labor protection, eliminate and avoid the impact of smoke, dust and irritating gases on the respiratory tract. Also prevent and control bronchial infections, appropriate physical activities, enhance physical fitness, and prevent colds. If you have cough and sputum, you should seek immediate medical attention and control the infection with antibiotics. The next step is to do respiratory gymnastics, insist on deep breathing exercises in the morning, exercise abdominal breathing, or do chest breathing with intercostal muscle movements. Oxygen therapy and positive pressure respiratory therapy can be used in the treatment. Attention should also be paid to reducing bronchospasm and improving pulmonary circulation.