Suddenly rapid heartbeat dyspnea sweating all over the body, if you consider low blood sugar reaction, to take sugar water as soon as possible, if you suspect acute myocardial infarction attack, to call 120 as soon as possible to go to the hospital, if you consider acute heart failure attack, to choose the seated position with both lower limbs hanging down, as soon as possible to call 120 to go to the hospital. The sudden appearance of the above symptoms is often seen in pathologic diseases, such as hypoglycemic reaction, heart failure, myocardial infarction and so on. Hypoglycemic reaction is easy to treat, and the symptoms can be relieved quickly by replenishing sugar. If there are frequent episodes, it is necessary to go to the endocrinology department for further consultation to find out whether there is any other etiology, such as the presence of insulinoma. If you suspect acute myocardial infarction or acute left heart failure attack, often in critical condition, we must call 120 as soon as possible to go to the hospital for emergency treatment, the patient try to choose a sitting position, to control emotions, avoid excessive tension and anxiety, for acute myocardial infarction, go to the hospital for feasible percutaneous intracoronary intervention, acute heart failure attack can be given to diuretics, dilatation, cardiac and other drug therapy. If a sudden panic, dyspnea accompanied by sweating, they can not determine the cause, and the symptoms continue, it is recommended to call 120 as soon as possible to go to the hospital for treatment.