The radiofrequency ablation procedure consists of three main steps, venipuncture and catheter placement, searching for the location of the arrhythmia, and ablation of the site of abnormal electrical activity. 1. Intravenous puncture and catheter placement. Select the catheter insertion site and disinfect the skin around the puncture point, local anesthesia with lidocaine, then puncture the artery/vein with a puncture needle. After successful puncture, a guidewire is inserted and the needle is withdrawn, and the catheter is inserted and delivered to the cardiac chambers after expanding the skin along the guidewire. 2. Finding the location of arrhythmia. The electrode catheter that enters the cardiac chambers can sense and release electrical stimulation, which makes it possible to induce arrhythmia by delivering electrical stimulation through the catheter to clarify the diagnosis of supraventricular tachycardia; and to search for the location of possible abnormal electrical activity by sensing and recording the electrical activity of the heart. 3. Ablation of the site of abnormal electrical activity. After searching for the possible location of abnormal electrical activity, radiofrequency ablation is performed by releasing electric current to the site, causing coagulative necrosis of the endocardium and subendocardial muscle at the site of abnormal electrical activity, thus achieving the goal of eradicating tachycardia. It is recommended to consult a doctor in time for any discomfort and standardize the treatment under the doctor’s guidance.