”Asthma” clinically refers to a sudden onset of dyspnea, mainly dyspnea, and in some cases, wheezing. Asthma is usually caused by bronchospasm, congestion and edema of the bronchial mucosa in the lungs, so it is called bronchial asthma. However, heart patients, especially those with coronary heart disease, can also develop a state similar to bronchial asthma because of their cardiac insufficiency (i.e., heart failure), which is medically known as cardiac asthma. Patients with coronary artery disease suffer from chronic inadequate blood supply to the myocardium and dystrophy of the myocardial fibers, resulting in myocardial sclerosis, which decreases the compliance and contractility of the myocardium, especially after myocardial infarction occurs, the contractility of the myocardium is worse, the function of the cardiac power pump becomes impaired, the heart beats less, the lung bruises, and the pooling of blood in the lungs affects the gas exchange of the lungs, and the patient develops a state of shortness of breath and shortness of breath. Typical cardiogenic asthma often occurs at night, because the amount of cardiac blood return increases significantly when sleeping flat, and pulmonary stasis is aggravated; at the same time, the excitability of the respiratory center decreases during sleep, and it does not respond to mild hypoxia, and it is only when pulmonary stasis reaches a serious level that the patient suddenly wakes up, appears highly shortness of breath, is forced to sit, sweats profusely, and in severe cases, may cough in paroxysms, and may deal with large amounts of pink foamy sputum.