When the heart rate is too fast, it is necessary to clarify the specific causes of the increased heart rate, such as sinus tachycardia, atrial tachycardia, supraventricular tachycardia, atrial fibrillation, etc., and take appropriate treatment according to the causes of the disease, as follows: 1. Sinus tachycardia: If it is caused by activity or emotional excitement, it can be effectively relieved after proper rest. If it is caused by fever, hyperthyroidism, anemia, etc., the heart rate can be normalized after treating the above diseases. 2. Atrial tachycardia: If it occurs in patients with pulmonary infection, it is necessary to correct hypoxemia, control the infection, and control the ventricular rate with metoprolol and amlodipine if necessary, and take amiodarone to restore the sinus heart rate. 3. Supraventricular tachycardia: deacetyl furfuryl glycoside can be used for treatment, and metoprolol can be taken to control the heart rate at the same time. 4. Atrial fibrillation: amiodarone, propafenone and other drugs can be taken to restore the heart rhythm, and if necessary, electrical cardioversion and catheter ablation therapy. Therefore, when you find the heart rate is too fast, you need to go to the hospital for examination and treatment in time, so as not to delay the condition.