If the patient has panic attacks and palpitations at night; 1. First of all, it should be considered that the patient has cardiac diseases, such as coronary artery disease, angina pectoris, arrhythmia, myocarditis, pericarditis, which will have panic attacks, palpitations, tightness in chest and shortness of breath, and the above symptoms are usually aggravated by the increase of vagal nerve tension at night; 2. For the patients with cardiac neuroses, especially when there is a disorder of the vegetative nerve function, there will be panic attacks, palpitations, insomnia and weakness at night; 3. For patients with cardiac neurosis, especially vegetative nerve dysfunction, there will be panic, palpitation, insomnia, fatigue and other symptoms at night; 3, for common endocrine metabolic diseases, such as hyperthyroidism, hyperadrenocorticism, there will also be panic, palpitation, chest tightness, shortness of breath at night; 4, for patients with a history of diabetes mellitus, if there is a hypoglycemic reaction at night, it will also cause panic and palpitation.