Premature ventricular contraction, also known as ventricular preterm contraction, is simply understood as a sudden premature contraction of the ventricles based on the normal ventricular rhythm, resulting in arrhythmia, and the most common subjective feeling among the general public is “heartbeat and panic”, sometimes accompanied by coughing. Ventricular premature is actually a kind of cardiac abnormality, just like the electrical circuit in your home, if there is a problem with the electrical circuit, the light in your bedroom will not be controlled by you, and it will be on for a while. The electrophysiological mechanism of ventricular premature formation is complex, and it is very difficult to explain it in simple terms, and people may not always understand it. I still prefer to explain it in terms of the circuitry in the home, which is not always exact, but easier to understand. If we compare the bedroom to the heart, it is like a separate light in the bedroom, and the light is controlled by a separate switch, it so happens that the switch does not work very well, a little on and a little off, so the light will be on and off. Or maybe not another switch control, but the wiring layout problems, electricity can be transmitted to the lamp for a while, and then stop conduction, so the lamp will also be a while to light and then go out. Is there any harm in ventricular premature? Usually, if there is no organic heart disease and there are not many episodes of premature beats, the ventricular premature may not be too harmful and may not need treatment in this case. Therefore, if we have premature ventricular contractions, we should always go to the hospital, first of all to find out if there is a combination of organic heart disease, and secondly to find out from the doctor the possible risks of premature contractions and whether treatment is needed. The treatment of premature ventricular contractions is divided into two types: medications and radiofrequency ablation surgery. There is a wide range of antiarrhythmic drugs, and patients are not able to choose their own, so it is usually necessary to follow the doctor’s advice and to communicate with him about the effect of the drugs and possible side effects. Here I mainly introduce a special treatment method called radiofrequency ablation therapy. The simple understanding is to find the point of origin of ventricular premature or abnormal conduction circuit in the heart, and then eliminate this point or pathway by heating, so as to cure the ventricular premature. However, the heart is a complex structure, and in the past, it was difficult to find the point through a single ablation catheter, and the success rate was relatively low. Nowadays, the medical development is very fast, and with the 3D calibration system, the morphology of the heart can be established first, and then the electrical conduction sequence of premature beats can be found according to the voltage and time limit of each part, which makes it easy to find the target point for ablation. In addition, the dose of X-rays received by the patient during the surgery is significantly reduced compared to the previous one by using the 3D system for calibration. Patients who do not respond to medication or who experience significant side effects, or who are unwilling to accept medication, may be considered for radiofrequency ablation surgery.