Objective To explore the effects of Wenxin granule combined with conventional therapy on cardiac function,ventricular remodeling and local inflammatory response in patients with paroxysmal atrial fibrillation (PAF).Methods From February 2016 to February 2017,116 patients with PAF in the Integrated Traditional Chinese and Western Medicine Hospital of Taizhou were randomly divided into control group(55 cases) and combined group(61 cases) according to the digital table.The control group was treated with routine amiodarone hydrochloride tablets and enalapril maleate tablets,and the combined group was treated with Wenxin granule on the basis of the control group.The clinical efficacy of the two groups was compared,and the cardiac function,the level of inflammatory reaction and the index of ventricular remodeling before and after treatment were compared and analyzed in the two groups.The adverse reactions were observed and analyzed in the two groups.Results The total effective rate in the combined group was 93.44％,which was significantly higher than 76.36％ in the control group (x2 =6.745,P ＜ 0.05).After treatment,the left atrial diameter,the FS and CI levels in the combined group were significantly higher than those in the control group and before treatment (all P ＜ 0.05).The level of Pd in the combined group after treatment was (47.16 ± 0.80) ms,,which was significantly lower than that in the control group [(50.25 ± 0.75) ms] and that before treatment (t =21.395,48.318,all P ＜ 0.05).The levels of hs-CRP and BNP in the combined group were (7.12 ± 2.71) mg/L,(118.43 ± 11.16) ng/L,respectively,which were significantly lower than those in the control group [(11.21 ± 2.89) mg/L,(123.6 ± 11.27) ng/L] and before treatment (t =7.865,2.504,8.585,8.752,all P ＜0.05).After treatment,the LVEF level in the combined group was higher than that in the control group and before treatment (t =4.785,10.573,all P ＜ 0.05).The LVEDD and LVSV levels in the combined group were significantly lower than those in the control group and before treatment (t =9.089,2.313,10.890,4.299,all P ＜ 0.05).The total incidence rate of adverse reactions in the combined group was 6.56％,which was slightly lower than 7.28％ in the control group,but there was no statistically significant difference between the two groups(x2 =0.023,P＞0.05).Conclusion Wenxin granule combined with routine treatment in the treatment of PAF can significantly improve the clinical efficacy,improve the cardiac function obviously,delaye the ventricular remodeling,decrease the level of local inflammatory reaction significantly and the safety is high.