Low heart rate in the morning may be physiological or pathological. 1. Physiological: The morning heart rate is 50-60 beats per minute, without symptoms of insufficient blood supply to the heart and brain such as dizziness, palpitations and fatigue, and this situation is mostly physiological. This condition is mostly physiological and does not require special treatment, and then the heart rate will gradually return to the normal level. 2. Pathological: heart rate less than 50 beats per minute in the morning, and accompanied by obvious discomfort in the precordial area, chest tightness, panic, dizziness and other symptoms, may be sinus bradycardia, atrioventricular block or sinus node syndrome. Abnormal heart rate needs to go to the hospital immediately for examination, such as electrocardiogram examination, cardiac ultrasound examination, etc., and relevant treatment for different causes.