Elderly people lying down on the stuffy, may be coronary heart disease, may also be cardiomyopathy or anxiety disorder. 1. Coronary heart disease: if the elderly suffer from coronary heart disease, may be due to the heart blood vessels atherosclerosis, resulting in narrowing of blood vessels, resulting in myocardial cells ischemia and hypoxia, may appear to lie down on the stuffy situation. 2. Cardiomyopathy: If the elderly suffer from cardiomyopathy, it may induce the left heart function to be impaired, and there will be stagnation in the pulmonary circulation. It is manifested as dyspnea. And the symptoms will be aggravated when lying down. 3. Anxiety disorder: If you suffer from anxiety disorder, your body will have vegetative nerve dysfunction, and when you lie down, you will have chest tightness. If the elderly lying down on the tightness, it is recommended to consult a doctor in a timely manner, improve the relevant examination, clarify the causative factors, and follow the doctor’s instructions for symptomatic treatment to avoid further aggravation of the condition.