Fast heartbeat and chest pain may be caused by insufficient rest, angina pectoris or myocarditis, it is recommended to go to the hospital for a detailed examination in time, and then according to the doctor’s guidance and recommendations for drug treatment. 1. Insufficient rest: Insufficient sleep and rest will affect the blood flow rate, which will cause rapid heartbeat and chest pain, and can be recovered after adjusting and resting. 2. angina: generally if the lipid content of the blood in the coronary artery blood vessel wall to produce deposits, the formation of atherosclerotic plaques, resulting in narrowing of the arterial lumen, the myocardial blood supply and oxygen supply is insufficient to cause angina pectoris, which causes rapid heartbeat chest pain symptoms. You can use nitroglycerin tablets, metoprolol and other drugs under the guidance of a doctor. 3. Myocarditis: generally caused by bacterial infection or autoimmunity decline, there will be fast heartbeat, chest pain and other symptoms. It can be treated with medicines such as acyclovir and furosemide under doctor’s guidance. Usually pay more attention, keep enough sleep, and good mental state, diet should be light and nutritious, and develop good living habits.