The most common causes of shortness of breath in the elderly are respiratory diseases, such as chronic wheezing bronchitis, chronic obstructive pulmonary emphysema, chronic pulmonary heart disease, bronchial asthma, cough variant asthma with severe infections, multiple causes, idiopathic interstitial fibrosis and bronchiectasis. In addition, because the cardiovascular system of the elderly is relatively poorer than that of young people, they are prone to cardiovascular diseases, such as angina pectoris and myocardial infarction due to various causes of myocardial hypoxia and ischemia, which can also cause symptoms of shortness of breath in the elderly.