WPW is a pre-excitation syndrome. Clinically, the pure pre-excitation syndrome does not show obvious symptoms, but when it is complicated by other types of arrhythmias, there will be corresponding clinical manifestations, commonly including tachycardia, mainly supraventricular tachycardia, which can occur in various types of arrhythmias such as atrial fibrillation and atrial flutter. The heart rate usually increases and can reach more than 200 beats per minute. The main clinical symptoms of patients are panic and palpitations, with insufficient blood supply, chest tightness and chest pain, and in severe cases, shock. In the most severe cases, death can occur due to life-threatening conditions.