Rapid heartbeat and shaking hands and weakness may be due to vegetative nerve dysfunction, arrhythmia, hypoglycemia, hypertension, myocardial ischemia, heart failure and other causes, but also pay attention to the possibility of hyperthyroidism. Phytoneurologic dysfunction, the patient’s sympathetic nerves are abnormally excited, will occur too fast heart rate, it will be rapid heartbeat, followed by hand tremor weakness. Arrhythmic episodes, such as episodes of supraventricular tachycardia, the ventricular rate is very fast, too fast ventricular rate, the patient’s heartbeat accelerated obviously, the discomfort is obvious, too fast ventricular rate will affect the heart’s ejection of blood, it will be accompanied by hand shaking weakness. Hypoglycemia, palpitations, sweating and fatigue, accompanied by a feeling of hunger, which may be manifested as a rapid heartbeat and hand tremors. Blood pressure fluctuations, a sudden rise in blood pressure, will reflexively accelerate the heartbeat, some sensitive patients may be shaking hands. Myocardial ischemia attack, generally patients with elevated blood pressure heart rate accelerated, at this time the heart rate accelerated, the patient if the chest tightness and other discomforts obvious, may be weak. Heart failure if the attack, the patient because of myocardial contraction weakness, the general ventricular rate accelerated, heart rate accelerated, heart failure when the patient’s feeling of weakness is obvious, and sometimes also hand shaking. Hyperthyroidism, patients often accelerated heart rate, hand shaking, weakness and discomfort. It is recommended to go to the hospital for formal examination and formal treatment.