Sudden acceleration of heartbeat and chest tightness may be caused by supraventricular tachycardia, heart disease, high blood pressure and other diseases. 1. Supraventricular tachycardia: Sudden acceleration of the heartbeat and chest tightness may be caused by supraventricular tachycardia, and it is recommended to consult a doctor in time. Under the guidance of the doctor to use verapamil, propafenone, amiodarone and other drugs for treatment, if necessary, catheter radiofrequency ablation and other surgical treatment. 2. Heart disease: Heart disease is mainly caused by damage to the structure or abnormal function of the heart, which usually leads to panic, palpitations, chest tightness, chest pain and other symptoms. It is recommended to consult a doctor in time and use aspirin, isosorbide mononitrate and other medications under the doctor’s guidance, and undergo surgical treatment if necessary. 3. Hypertension: Hypertension is a phenomenon in which the pressure on the walls of blood vessels caused by the flow of blood in the blood vessels is only persistently higher than normal, which usually leads to headache, arrhythmia, chest tightness and other symptoms. It is recommended to consult a doctor in time, under the guidance of the doctor for furosemide, amlodipine, timosartan and other medications. Therefore, if the patient’s heartbeat suddenly accelerated chest tightness symptoms, it is recommended to promptly seek medical attention to identify the cause of the disease and active treatment.