Ventricular fusion waves seen in pregnant women with premature ventricular beats are a manifestation of cardiac arrhythmia. Ventricular fusion waves seen with premature ventricular beats in pregnant women are arrhythmias that can be seen in functional or organic lesions of the heart. Functional lesions are generally due to excessive intake of tobacco, alcohol or tea, coffee during pregnancy, or mental stress during pregnancy, excessive fatigue, chronic insomnia, neurasthenia, etc., which can induce premature ventricular contractions with ventricular fusion waves. At this time, pregnant women must pay attention to rest, avoid exertion, avoid stress and anxiety, avoid smoking and alcohol. Organic lesions are common in pregnant women with underlying heart disease, such as ischemic cardiomyopathy, coronary heart disease, pulmonary heart disease, rheumatic heart valve disease, myocarditis. Pregnant women with ventricular premature beats can see ventricular fusion waves need to go to the hospital in time, under the guidance of the doctor intervention treatment.