A heart rate of 200 beats/minute is more dangerous and belongs to tachycardia. 1. In a quiet state, the normal human heart rate is 60~100 beats/min, more than 100 beats belongs to tachycardia, when the heart rate is 200 beats, the heart rate is too fast, the diastolic period of the heart is shortened, which will lead to myocardial ischemia. The ejection of blood from the heart also decreases significantly, and the blood supply to various organs is insufficient. 2. A heart rate of 200 beats is likely to be a serious tachyarrhythmia, such as ventricular tachycardia, atrial fibrillation, etc. It is recommended that you call 120 in time and go to the hospital for relevant examinations, such as electrocardiogram, cardiac ultrasound, coronary angiography, etc., in order to clarify the cause of the tachycardia. If ventricular tachycardia or ventricular fibrillation occurs, electrical cardioversion or defibrillation is needed to restore sinus rhythm. It is recommended to consult a doctor as soon as possible if you find any abnormal discomfort to avoid delaying your condition.