After radiofrequency ablation, bed rest, diet control, close monitoring of vital signs and puncture site, prevention of thrombosis, and regular review. Radiofrequency ablation is one of the more common treatments for tachyarrhythmia. After the procedure, it is necessary to pay attention to bed rest, avoid overeating, avoid high-calorie and high-fat food, closely monitor vital signs, especially changes in heart rate, and observe whether there is any resumption of arrhythmia to avoid recurrence. Secondly, we should pay attention to the condition of the puncture site, observe whether there is bleeding, oozing blood, hematoma and so on and deal with it in time. Anticoagulation therapy should be given under the doctor’s guidance to reduce the risk of thrombosis. It is also necessary to regularly review the electrocardiogram and cardiac ultrasound to observe any vascular and pericardial injury and avoid various complications.