Intercardiac intervals are arrhythmias, premature beats, and premature atrial contractions. Patients may feel a sudden pause in the heart, panic, discomfort in the precordial region, or occasional breath-holding. There are benign intervals and malignant intervals. Benign intervals usually have no obvious clinical manifestations and are often detected during physical examination or palpation of the pulse, which occurs less frequently and can be detected at any time. If the heart interval is more frequent and has obvious clinical manifestations, it is a malignant heart interval, mostly caused by some diseases, such as viral infection, cardiomyopathy, coronary artery disease, myocardial blood supply, etc., with these triggers are also prone to occur, it is necessary to give the appropriate treatment, actively treat the original disease, improve the mood and lifestyle.