Panic at night, can not sleep, may be related to heart problems, mental stress or improper diet at night and other factors. 1. Heart problems: myocardial ischemia or cardiac insufficiency, at night when lying down, due to the increase in the amount of return blood, resulting in ischemic aggravation, there will be a panic attack symptoms, generally take a sitting position, the symptoms have been relieved. 2. Improper diet at night: for example, eating too much too late at night or drinking strong coffee, strong tea and other stimulating beverages or drinking alcohol causes sympathetic nerve excitation, there will be symptoms of panic, if serious, it will be difficult to sleep. 3. Mental stress: when the usual study or work pressure is relatively large, mental tension, then there will be autonomic nervous system dysfunction, can have sleepless nights, panic symptoms. Panic at night can be caused by a variety of reasons, it is recommended to go to the hospital as soon as possible when the symptoms appear, clear reasons for targeted treatment, so as not to cause aggravation of the condition.