Premature beats, also known as premature contractions, are the most common clinical arrhythmia caused by premature impulses from ectopic pacing points in the heart. Premature beats are very common and can be seen in patients as well as in most normal people. During the electrocardiogram, the occurrence of premature beats >5 times per minute is called “frequent premature beats” and ≤5 times per minute is called “episodic premature beats”. Depending on the origin of the premature beats, there are three types of premature beats: atrial, junctional and ventricular. Many people do not feel anything, while others feel panic and others feel their heart “bouncing”. The causes of premature beats are numerous and can be divided into functional and pathological factors. Functional premature beats are often characterized by simple arrhythmias, which do not combine with underlying heart disease and have little effect on blood circulation, and usually do not require medication or symptomatic treatment. In addition, the occurrence of premature beats or adverse symptoms can be reduced through lifestyle interventions (e.g., regular work and rest without staying up late, avoiding strong coffee or tea, reducing work stress, etc.). In contrast, pathological premature beats are often combined with underlying heart disease and are frequent, persistent and multifocal, so it is necessary to improve other auxiliary examinations to find the cause and provide etiological treatment, such as premature beats caused by myocardial ischemia in coronary heart disease, which requires anti-platelet aggregation drugs, lipid-regulating drugs and even stent implantation. In some cases of frequent premature beats, the effect is still not relieved by medication such as betalactam, isoptin and acetaminophen, etc. At this time, radiofrequency ablation can be considered, and some patients can be cured. Therefore, even if premature beats are detected, do not be overly nervous and worried, but go to the cardiology department of a regular hospital and let the specialist physician assess the nature of premature beats and then give the correct treatment.