Cough of cardiac origin generally refers to cough caused by cardiac diseases, and is most often seen in cardiac insufficiency, which is characterized by a cough that may be aggravated at night and in the prone position, and is mostly accompanied by clinical signs and symptoms of cardiac diseases. Cough caused by cardiac insufficiency has certain characteristics compared to other diseases, because patients with cardiac insufficiency are prone to aggravation at night, and lying down may also lead to an increased burden on the heart, so the cough may be aggravated in the above cases. Cough caused by cardiac insufficiency may also have other characteristics, such as when accompanied by pulmonary edema, coughing and coughing up foamy sputum, cardiac insufficiency is also likely to be accompanied by chest tightness and dyspnea and other related symptoms. To summarize, if a patient has underlying cardiac disease and develops a cough with the above features, cardiac insufficiency needs to be investigated, and prompt medical attention should be sought.