Atrial fibrillation is one of the most common clinical arrhythmias, mainly manifesting as rapid and disorganized supraventricular tachycardia. The fundamental treatment of atrial fibrillation is to restore sinus rhythm and maintain it for a long time in order to prevent the complications of atrial fibrillation. As radiofrequency ablation technology continues to mature, radiofrequency ablation of atrial fibrillation has become the primary means of treating atrial fibrillation. Do all people with atrial fibrillation need radiofrequency ablation? This article briefly discusses radiofrequency ablation of atrial fibrillation. First, what is radiofrequency ablation? Radiofrequency ablation of atrial fibrillation catheters is one of the treatments for cardiac arrhythmias. The procedure is performed under the monitoring of X-ray angiography machine, by puncturing the vein, inserting the marker electrode catheter into the coronary sinus of the heart, then performing atrial septal puncture, reaching the left atrium with the marker electrode and RF ablation catheter, then performing 3D reconstruction of the left atrium, and performing pulmonary vein ablation isolation under 3D guidance. Radiofrequency catheter head-end energy is a kind of low-voltage and high-frequency electrical energy, which is released by the radiofrequency ablation instrument through the electrode at the head-end of the catheter. Between the head-end of the catheter and the local myocardial endothelium, the electrical energy is converted into heat energy, and when it reaches a certain temperature, it can cause the target myocardial cells to become dehydrated and degenerate and necrotic, thus the autoregulation and conduction of the heart can be changed, and the arrhythmia can be cured. During the catheter radiofrequency ablation treatment, sedative and analgesic drugs will be given, and general anesthesia is not required, so the patient is awake during the procedure. Second, which atrial fibrillation patients need to do radiofrequency ablation? 1, paroxysmal atrial fibrillation, poorly controlled by medication, recurrent atrial fibrillation and obvious symptoms; 2, persistent atrial fibrillation had a successful conversion of atrial fibrillation, a history of paroxysmal atrial fibrillation before and after the conversion of atrial fibrillation; 3, age less than 75 years, exclude valvular heart disease, dilated cardiomyopathy, heart failure, myocardial infarction and other organic heart disease. Exclude other causes of atrial fibrillation, such as hyperthyroidism, alcohol or drug intoxication, etc. 4.Patients with paroxysmal atrial fibrillation combined with hypertension, hypertensive heart disease and coronary angina are also indications for radiofrequency ablation after the blood pressure and angina are controlled. 5.Patients with pre-excitation syndrome combined with atrial fibrillation can undergo bypass ablation. 6, Patients with fast-slow syndrome combined with atrial fibrillation can be treated with atrial fibrillation ablation. 7, patients with idiopathic atrial fibrillation whose drug therapy is ineffective or who cannot accept or are unwilling to undergo drug therapy can choose atrial fibrillation ablation therapy. Third, which patients cannot undergo radiofrequency ablation? Patients with left atrial or left ear thrombosis are contraindicated to undergo catheter radiofrequency ablation; 2. Patients with active bleeding disorders, puncture site or systemic infection, organ failure, or advanced chronic wasting disease; 3. Patients who cannot receive conventional radiofrequency ablation for other reasons are also not suitable for atrial fibrillation radiofrequency ablation treatment, such as having had atrial septal defect repair.