Panic attacks and difficulty sleeping at night are mostly due to the sympathetic nerves still being in a state of hyperexcitation at night. The release of catecholamines from nerve endings increases, which manifests as panic attacks and difficulty in sleeping at night. As insomnia aggravates panic attacks, patients are often accompanied by anxiety and irritability, forming a vicious circle. Patients who have panic attacks at night and have difficulty sleeping are advised to further check ECG or 24-hour ambulatory ECG, ambulatory blood pressure, and cardiac ultrasound. To understand whether the cause of the panic is tachycardia, or arrhythmia, and whether it is combined with myocardial ischemia, etc. The problems found should be treated in time to help improve sleep, eliminate anxiety, and prevent episodes of myocardial ischemia.