If chest tightness and shortness of breath occur at night, there are usually the following causes: 1, cardiogenic diseases, such as patients with coronary atherosclerotic heart disease, inadequate myocardial blood supply, unstable angina, and myocarditis, pericarditis, endocarditis, under the premise of transient ischemia in the coronary arteries of the heart leading to spasm, there will be chest tightness, shortness of breath, palpitations, especially at night, the patient The symptoms will be relatively obvious. 2, cardiac neurosis, for example, the heart will also appear certain neurological symptoms when the plant nerve dysfunction, especially at night with the neurological symptoms of the heart dominant, because the human vagus nerve appears excitatory reflexes, resulting in the clinical phenomenon of chest tightness, shortness of breath, palpitations. 3, patients with pulmonary insufficiency, such as pulmonary hypertension or chronic pulmonary heart disease, will also in Patients with pulmonary insufficiency, such as pulmonary hypertension or chronic pulmonary heart disease, also experience chest tightness and shortness of breath at night, accompanied by palpitations.