Geriatric lung refers to the aging of the lungs that occurs due to the aging of the elderly and is called geriatric lung. It refers to the fact that the function of the lungs is significantly lower compared to when they were younger, and the ability of the lung tissues to metabolize slows down. If older people exercise relatively too much, they are prone to shortness of breath, fatigue, dizziness and other symptoms. At this time, the alveolar elasticity will decline, relative hardening, lung capacity decline leads to lung ventilation and ventilation function has a different degree of weakening, can appear to have exertion dyspnea. Because of the decline in immunity, it is easy to be invaded by pathogens and lung infections, which can appear obvious cough, cough sputum, chest tightness, shortness of breath, wheezing, and even cause dyspnea.