If a patient has heart trouble that is slightly relieved by coughing, the first thing to suspect in such a patient is coronary artery disease and cardiac insufficiency. When a patient coughs, the cough reflex induces the inhalation of large amounts of oxygen, which can counteract the pulmonary stasis caused by cardiac insufficiency. Therefore, if a patient presents with cardiac distress, accompanied by coughing, and can improve significantly after coughing, he or she should go to the local hospital for an electrocardiogram to check the ECG in the normal state, i.e., when there is no attack, and the ECG during an attack to compare the presence of dynamic ST-T changes, and if there are corresponding changes, then myocardial ischemia may be considered. In addition, cardiac ECT can be done to determine the surviving myocardium of the heart and how active the myocardium is. If troponin is progressively elevated, acute myocardial ischemia, such as acute myocardial infarction, may be considered. In addition, coronary CT or coronary angiography can be performed to accurately determine whether there is significant narrowing of the three vessels on the surface of the heart, with coronary angiography being the gold standard for the diagnosis of coronary artery disease. Of course, if a patient has a frequent cough, a CT of the chest should also be done, even a plain CT of the chest plus an enhanced CT to exclude the possibility of pneumonia, bronchiectasis, lung abscess and lung cancer.