Sudden chest tightness and breathlessness, according to the specific situation to take the corresponding measures: 1, young people suddenly chest tightness and breathlessness, to consider two situations, there are spontaneous pneumothorax, mostly seen in the body type of thin and tall people, mostly induced by intense cough or intense exercise, chest X-ray can be found in the lungs translucent no texture area, need to immediately perform closed chest drainage or thoracentesis exhaust decompression. There are also acute attacks of bronchial asthma, mostly with a history of allergies and symptoms similar to attacks. The treatment is mainly to relieve chronic inflammation of the airways and diastolic bronchial, commonly used drugs are salbutamol sulfate, budesonide, etc. 2, the elderly sudden onset of chest tightness, breathlessness, to consider the possibility of acute left heart failure, especially those with previous history of hypertension, coronary heart disease. It is necessary to be immediately hospitalized for further examination and take anti-heart failure treatment after clarification. The elderly can also be seen in acute exacerbation of chronic obstructive pulmonary disease, and need to be given antispasmodic and wheezing treatment, such as the use of aminophylline, methylprednisolone, etc.