If the cardiac radiofrequency surgery fails to find the premature beat point, the premature beat can be induced by medication, and the surgery can be performed after the premature beat recurs if the induced beat fails. Radiofrequency ablation of the heart requires current stimulation to induce premature beats, find the point of premature beats, and ablate the abnormal lesion that induces premature beats to eliminate the arrhythmia. Failure to induce a premature beat can be induced by intravenous isoprenaline. In some people, current stimulation and drugs still fail to induce premature beats during radiofrequency ablation. Surgery can be considered after the next recurrence of premature beats. It is recommended to stop the use of antiarrhythmic drugs according to the doctor’s advice before radiofrequency ablation, otherwise it is not easy to stimulate premature beats due to the effect of drugs.