Waking up after falling asleep with heart pumping may be palpitation or arrhythmia or angina pectoris. It is recommended that the patient undergoes 24-hour ambulatory electrocardiogram (ECG) to observe whether there are any arrhythmias, such as atrial premature beats, ventricular premature beats, pre-excitation syndrome, paroxysmal atrial fibrillation, supraventricular tachycardia, etc. Cardiac ultrasonography may also be performed to observe whether there are any organic pathologies in the heart, or instantaneous electrocardiogram is performed to see whether there is myocardial ischemia in the time of discomfort. When arrhythmia occurs, but there are no special clinical symptoms, and there is no hemodynamic instability, no special treatment can be given. If there are significant clinical symptoms, such as dizziness, blackouts, or even syncope, drug or radiofrequency ablation therapy is needed. If angina pectoris is present, treatment is required. Coronary angiography can be performed to determine the type and degree of stenosis, and stent implantation or even coronary artery bypass grafting is required in severe cases. Please go to the hospital for examination and treatment when you have heart discomfort to avoid delaying your condition.