If the myocardial ischemia is simple and mild, it will not cause dry cough. If the myocardial ischemia is more severe and has been accompanied by heart failure, it will cause dry cough. Because heart failure, pulmonary circulation stasis and pulmonary edema will cause respiratory symptoms of dry cough, accompanied by heart panic, obvious wheezing, inability to lie down at night and chest tightness and shortness of breath, the symptoms of heart failure should be actively corrected at this time and the dry cough will improve. In addition, if you have mild myocardial ischemia but still have dry cough, you should exclude whether the drugs you are currently taking can cause dry cough, such as captopril-type drugs, and adjust and change the drugs if there is. If not, consider myocardial ischemia combined with respiratory diseases. It is recommended to go to the hospital for examination to improve chest X-ray, chest CT, pulmonary function, bronchial excitation and other examinations, except for the possibility of lung infection, cough variant asthma, etc.