To systematically review the literature on the regional and temporal changes of TCM syndromes and syndrome elements of arrhythmia in the last two decades in China，so as to reveal the distribution changes of TCM syndromes and syndrome elements of arrhythmia and provide a reference for the treatment of arrhythmia based on syndrome differentiation in the future.Methods:The articles about the TCM syndromes of tachyarrhythmia and bradyarrhythmia were retrieved from the China National Knowledge Infrastructure(CNKI)，China Science Periodical Database(CSPD)，and Chinese Citation Database(CCD) with the time interval from 2000 to 2020 for statistical analysis.Results:Totally 986 articles were enrolled，involving 42 077 patients(18 944 patients with tachyarrhythmia and 23 133 patients with bradyarrhythmia).The common TCM syndromes of tachyarrhythmia were qi and yin deficiency，blood stasis blocking collaterals，yin deficiency leading to fire hyperactivity，and obstruction by phlegm and blood stasis，in which the main syndrome elements were yin deficiency，qi deficiency，and blood stasis.The common TCM syndromes of bradyarrhythmia were heart and kidney yang deficiency，yang deficiency and blood stasis，and qi and yin deficiency，in which the main syndrome elements were yang deficiency，blood stasis，and qi deficiency.Conclusion:Tachyarrhythmia was mainly caused by interior deficiency(yin or qi) with exterior excess(blood stasis or phlegm).Bradyarrhythmia was mainly caused by heart and kidney yang deficiency，together with blood stasis blocking vessels or phlegm and dampness.In recent years，the proportion of the patients with interior deficiency was high，and that of the patients with exterior excess was low.