Young people’s chest tightness and shortness of breath are generally considered to be related to cardiac neurosis, respiratory diseases (such as bronchial asthma, spontaneous pneumothorax), and can not be ruled out coronary heart disease, heart failure and other cardiovascular diseases. 1. Cardiac neurosis: due to anxiety, depression, stress and other emotional upset caused by autonomic disorders, often seemingly “heart attack”, chest tightness, symptoms come and go, delayed, often manifested as palpitations, chest and back pain, chest tightness, shortness of breath, dyspnea, can be accompanied by fatigue, insomnia and so on. 2. Respiratory diseases: such as bronchial asthma leading to bronchial constriction and spasm, pleural effusion, spontaneous pneumothorax is easy to make the lung tissue is severely compressed, affecting pulmonary ventilation, chest tightness, shortness of breath performance. Coronary heart disease, heart failure and other cardiovascular diseases can also cause chest tightness and shortness of breath due to the weakening of the heart’s ability to supply blood, therefore, patients need to go to the hospital, combined with physical and chemical examination to identify the cause of the disease.