Shortness of breath is usually seen in the following diseases: 1, respiratory diseases: young people are more likely to consider the presence of bronchial asthma, which is a chronic airway inflammatory disease that can cause bronchial constriction and spasm, and thus often manifests as shortness of breath, which can be relieved by using bronchodilators, such as albuterol sulfate. In the case of elderly people, it is necessary to consider the presence of chronic obstructive pulmonary disease, which can be clarified by improving pulmonary function, chest X-ray or lung CT examination. 2, cardiovascular disease: if there is coronary heart disease or hypertension and other diseases, shortness of breath should be considered as cardiac insufficiency, which can be clarified by timely improvement of cardiac ultrasound, myocardial enzyme profile and other related examinations.