Chest tightness, dizziness, vomiting and accompanied by breathlessness, this clinical manifestation is more common in some diseases, such as respiratory diseases, can be seen in acute bronchitis, wheezing acute attacks of chronic bronchitis, bronchial asthma, as well as pulmonary heart disease, chronic obstructive emphysema, etc., but also due to a more serious lung infection, resulting in toxic infectious shock. Clinically, it is also seen in cardiovascular system diseases, such as coronary atherosclerosis, causing acute ischemia and hypoxia in cardiomyocytes.