The symptoms of coughing in heart disease are mainly related to the following factors: 1. The cause of drugs, for example, patients with heart disease who also have hypertension may apply drugs such as Benadryl and Enalapril to lower their blood pressure. These drugs themselves have the side effect of coughing and can cause coughing symptoms in heart disease patients. 2. Heart failure, almost all heart diseases tend to cause chronic heart failure in the end, and patients with heart failure tend to cause bronchial or alveolar mucosal stasis, which is particularly likely to cause coughing in this case. 3. After heart failure, the ejection capacity of the left ventricle decreases, and blood stagnates in the left ventricle causing The enlarged left ventricle transmits this pressure to the left atrium, causing enlargement of the left atrium. This enlarged heart produces pressure on the adjacent airways, causing an irritating cough.