Radiofrequency ablation method can treat more diseases, mainly including the following: 1, cardiac arrhythmia including: paroxysmal supraventricular tachycardia, atrial fibrillation, atrial flutter, ventricular premature, ventricular tachycardia, etc.; 2, intervertebral disc protrusion; 3, treatment of hypertension: treatment of hypertension by ablation of sympathetic ganglion of kidney; 4, treatment of tumor: treatment of tumor by radiofrequency ablation, which is the most widely used liver cancer treatment. It can especially achieve radical treatment of small liver cancer; it is also commonly used in the treatment of limited stage lung cancer. If the tumor cannot be removed surgically because of lung function, radiofrequency ablation treatment can also achieve the effect of radical treatment.