Sudden arrhythmia in the middle of the night heartbeat accelerated sweating, may be caused by nervousness and other physiological factors, through the combing of bad mood can be relieved; may also be caused by arrhythmia, myocardial ischemia, hyperthyroidism and other diseases, according to the specific causes of the use of drug therapy or surgical treatment. 1. Physiological factors: such as overwork and stress before going to bed, nervousness or fear during sleep, etc., which can be gradually relieved by improving bad mood and proper rest. 2. Disease factors: (1) Arrhythmia: according to the doctor’s advice, metoprolol, amiodarone, propafenone and other appropriate drugs should be used to fight arrhythmia, and catheter ablation should be performed if necessary. Pay attention to the side effects of bradycardia, blurred vision, gastrointestinal discomfort. (2) Myocardial ischemia: In mild cases, isosorbide mononitrate, verapamil, aspirin and other drugs are used to improve myocardial ischemia and prevent myocardial infarction. In severe cases, coronary intervention or surgical treatment. Use of drugs to pay attention to headache, bradycardia, gastrointestinal discomfort, bleeding and other side effects. (3) Hyperthyroidism: Thyroid hormone levels can be controlled with drugs such as methimazole. If the heart rate is still fast, propranolol can be used to control the heart rate. Pay attention to the side effects of drugs such as bradycardia and arthralgia. When symptoms such as rapid heartbeat and sweating suddenly appear in the middle of the night, it is recommended to consult a doctor in time to clarify the cause of the disease and standardize the treatment with the help of the doctor, so as not to delay the condition.