Shortness of breath after stenting for myocardial infarction may be caused by physiological factors such as over-exertion after the operation and certain damage to the blood vessels caused by the stent, or it may be caused by pathologic factors such as insufficient blood supply to the heart and reappearance of stenosis of the blood vessels, which need to go to the hospital in time for consultation. 1. If the patient does not pay attention to rest after the operation, is too tired, or the endothelium of the blood vessel is damaged in the process of placing the stent, resulting in chest tightness and shortness of breath after the stent, generally ensure sufficient rest, avoid over-excitement, avoid depression and other negative emotions, and recover after a period of time. 2. If chest tightness and shortness of breath are caused by insufficient blood supply to the heart, nitrate drugs (such as nitroglycerin and isosorbide nitrate), antiplatelet drugs (such as clopidogrel and aspirin), and statins can be used for treatment under the guidance of doctors, which can effectively increase the blood supply to the heart muscle. 3. Due to stenosis or thrombus formation within the stent again caused by chest tightness and shortness of breath, at this time, it is necessary to carry out balloon dilatation to make the stent once again open, but also to take thrombolytic or thrombus removal therapy for the thrombus within the stent. When myocardial infarction after stenting chest tightness and shortness of breath to rule out physiological factors, should be timely to the hospital to avoid adverse effects.