Under normal circumstances, the heart beats regularly to ensure that it pumps blood. If the heart beats irregularly, it is called irregular heart rhythm, also known as arrhythmia, and the common types are premature beats, atrial fibrillation, sinus arrhythmia and so on. 1. Premature beats: caused by exertion, emotional excitement, exercise, fever, chronic obstructive pulmonary emphysema, various heart diseases, etc. It refers to the heart beating in advance, also known as intermittent or preterm contractions, including junctional premature beats, ventricular premature beats, etc. 2. Atrial Fibrillation: Commonly seen in patients with high blood pressure, elderly population, heart failure, etc. It is characterized by irregular heart rhythms, such as a pulse that is shorter than the heartbeat, and a heartbeat that varies in strength. 3. Sinus arrhythmia: The heart rate changes back and forth with breathing, showing that the heart rate slows down when the patient exhales and speeds up when the patient inhales, and the difference is large. Patients with arrhythmia need to go to the hospital to get a clear picture of the specific type of the disease and be treated under the guidance of a doctor.