〔Abstract〕 Objective To explore the predictive value of CHADS2and CHA2DS2-VASc scores for late recurrence after catheter ablation( CA) of atrial fibrillation. Methods 92 patients with atrial fibrillation of CA who hospitalized in the Second Affiliated Hospital of Anhui Medical University for the first time from July 2018 to December2020 were collected. Results From the 3rd postoperative month to the 6th postoperative month,atrial fibrillation outpatients should follow-up each month. 92 patients were collected,of which 3 were missing during follow-up,89were followed up,and late postoperative recurrence ratio was 24%. Compared with patients without recurrence,recurrent patients were significantly higher in age,smoking( 30%),diabetes mellitus( 38%),heart failure( 29%),platelet count,left atrial diameter( LA),CHADS2,and CHA2DS2-VASc scores; furthermore Logistic regression analyzed variance factors that were not included in the score: CHADS2( OR = 13. 473,95% CI: 3. 804-47. 713),LA( OR = 1. 193,95% CI: 1. 049-1. 356)( P<0. 05); CHA2DS2-VASc( OR = 5. 363,95% CI: 2. 822-10. 193),LA( OR = 1. 245,95% CI: 1. 087-1. 426)( P<0. 05). ROC curves predicted the values of two sets of scores for late recurrence after CA,AUC( CHADS2) = 0. 8578( 95% CI: 0. 7618-0. 9539),AUC( CHA2DS2-VASc) = 0. 8848( 95% CI: 0. 7985-0. 9711). Conclusion LA,CHADS2and CHA2DS2-VASc scores are independent risk factors for late recurrence after CA of atrial fibrillation,and CHA2DS2-VASc scores have better predictive value.