The common clinical reasons for patients to keep coughing after placing a stent for heart attack are drug side effects, respiratory infections or having underlying respiratory diseases. 1. Drug side effects Some drugs after stent surgery for heart attack patients have the side effect of dry cough or shortness of breath, such as antiplatelet drug Tegretol, ACEI drug Captopril or Fosinopril, etc., mostly dry cough without sputum. Some patients can take the drug for a period of time to reduce or disappear the symptoms, if the patient intolerance or symptoms persist, it is recommended to change the drug under the guidance of the doctor. 2.Perioperative respiratory tract infection Catheterization room is generally low air-conditioning temperature, surgical patients may be cold and flu secondary respiratory tract infections such as cough, or a combination of basic respiratory diseases such as chronic obstructive pulmonary disease, bronchial dilatation, etc., may also cause coughing symptoms, which is often accompanied by coughing sputum. Symptomatic anti-infection, phlegm and cough treatment is needed. It is recommended that patients who have been coughing after the placement of stents for heart attack should consult a specialist to find out the cause of the disease and follow the doctor’s instructions for treatment, and do not take medication on their own to avoid aggravating their condition.