Not being able to get air out of the chest is called shortness of breath or dyspnea, and there are several causes for this, and depending on the cause, the treatment will be different. Shortness of breath can also occur if an asthma attack is triggered by external factors. It is treated by applying hormones as well as airway dilators, and the symptoms improve quickly. If the dyspnea is caused by trauma or spontaneous pneumothorax, it is necessary to go to the hospital immediately to improve the chest radiograph or chest CT examination to clarify the diagnosis. If the situation is serious, the gas must be drained out through closed chest drainage. In addition, there may be heart problems, acute heart disease, such as angina pectoris or myocardial infarction will appear dyspnea, must go to the hospital to improve the relevant examination. After diagnosis, if acute myocardial infarction is considered, thrombolytic therapy must be carried out immediately, or vascular intervention methods of treatment.