Frequent multifocal premature ventricular beats are a type of arrhythmia, which can be manifested on the electrocardiogram (ECG) as two or more premature ventricular beats in the same lead, and are usually more severe. Frequent multifocal premature ventricular beats may induce ventricular tachycardia or ventricular fibrillation, which may result in palpitations, shortness of breath, and chest tightness in mild cases, or cardiac arrest in severe cases, which may lead to sudden death, and is therefore a serious condition. In addition, frequent multifocal premature ventricular beats are often seen in acute myocardial infarction, acute myocardial ischemia and other serious organic heart diseases, and may also be associated with dilated cardiomyopathy, viral myocarditis and other serious heart diseases, and severe hypokalemia and hypomagnesemia, which are usually serious in themselves, and can be even more serious when accompanied by frequent multifocal premature ventricular beats. In the case of frequent multifocal premature ventricular beats, it is necessary to find out the cause of frequent multifocal premature ventricular beats, and actively administer beta-blockers such as bisoprolol fumarate, metoprolol tartrate tablets, or intravenous antiarrhythmic drugs such as amiodarone hydrochloride, as well as correcting the conditions of low potassium and magnesium, which can help to minimize the chances of episodes of frequent multifocal premature ventricular beats.