Coronary heart disease patients with cough must seek medical attention in a timely manner to identify the cause of the cough and give timely treatment is most important. This is because frequent coughing by patients can affect sleep and aggravate the original myocardial ischemia, which adversely affects the recovery of coronary heart patients, as follows: 1. Except for cough caused by myocardial ischemia in patients with coronary heart disease, although it is rare clinically, some atypical angina attacks are seen with cough as the first symptom, and myocardial ischemia is confirmed by electrocardiogram or 24-hour ECG, cardiac ultrasound, coronary CTA and other examinations. After coronary expansion and anticoagulation treatment with isosorbide nitrate tablets and aspirin, myocardial ischemia is corrected and cough symptoms are relieved; 2. cough is occasionally present in patients with coronary artery disease combined with hypertension who are taking ACEI-type antihypertensive drugs, and cough can be relieved by changing to other antihypertensive drugs; 3. cough caused by respiratory disorders such as pharyngitis and bronchitis, except for coronary artery disease combined with pharyngitis, is recommended for specialist consultation and further treatment to improve cough symptoms as soon as possible. It is beneficial to stabilize the condition of patients with coronary heart disease.