Whether a congenital arrhythmia is serious or not needs to be determined based on the patient’s specific condition. The normal heartbeat is 60-100 beats per minute, and any heartbeat lower than 60 beats per minute or higher than 100 beats per minute is called arrhythmia. Congenital arrhythmia should be combined with cardiac ultrasound. If the ECG of arrhythmia shows episodic atrial premature or one degree of atrioventricular block, there is no special clinical manifestation, and the structure of the heart is not changed, and there will not be any cardiac insufficiency, which is not a big problem. This situation is most often seen in adolescents, due to the imbalance between sympathetic and parasympathetic development during the growth period of adolescents, so the performance of cardiac arrhythmia will occur. If serious arrhythmia, such as congenital sick sinus syndrome, and atrial fibrillation, or the interventricular septum or atrial septum appeared a large defect, such a case of clinical symptoms is obvious, must be adjusted under the guidance of the doctor, so that the heart beat more neatly.