Objective:This study aims to analyze the real-world data regarding the effect of catheter ablation and the factors related to recurrence after ablation in elderly patients with atrial fibrillation. Methods:Elderly patients(≥60 years old)with atrial fibrillation receiving catheter ablation from January 2013 to December 2016 in our center were enrolled in this study. Clinical data were collected to confirm efficacy,safety,and recurrence-related factors of atrial fibrillation. Results:A total of 482 patients were eligible and the mean age of them was (66.5±4.7) years old. The study group included 297 males(61.6%)and 185 females(38.4%). There were 239(49.6%)patients diagnosed with paroxysmal atrial fibrillation,and the remains were persistent atrial fibrillation. There were 4 cases of perioperative complication and all of them were relevant to the venipuncture. The mean follow-up was (20.4±5.6) months. During the follow up,a total of 104(21.6%)patients experienced recurrence. The recurrent group and non-recurrent group were significantly different in left atrial diameter,diabetes,heart failure and CHA2DS2-VASc score(P < 0.05). There were no significant differences in age,gender,hypertension and other factors between the two groups. Conclusion:Catheter ablation of atrial fibrillation is safe and effective in elderly patients. Enlarged left atrium,and some comorbidities may be associated with recurrence of atrial fibrillation.