Abstract: Existing ordinary cardiac ablation catheter, especially, the catheter for atrial fibrillation ablation is easily skipped off the target site of ablation when it is being moved from one site to another. The present invention provides a cardiac ablation catheter with a guide-wire. During a procedure of pulmonary vein electrical isolation, the guide-wire needs to be advanced into the distal end of pulmonary vein. With the assistant of the powerful sustainability from the guide-wire, the ablation catheter will be more controllable.