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T波电交替是反映心肌机制的无创电生理指标，而窦性心律震荡是出现单发室性期前收缩后，自主神经对动脉血压波动所做出的反应。大量文献证明，两者均是预测恶性室性心律失常及心脏性猝死的无创电生理指标，尤其适用于冠状动脉硬化心脏病（冠心病）患者。现结合文献对这两个指标的定义、机制、研究现状及临床意义予以综述。,T wave altans is an noninvasive electrophysiological index that reacts the mechanism of myocardium.Heart rate turbulence is autonomic nerve’s response to arterial blood pressure after single ventricularpremature contraction.A large number of literatures proved that TWA and HRT are the noninvasive electrophysiologicalindexes for predicting the malignant arrhythmia and heart sudden death,especially for thecoronary heart disease.This article will review the definition,mechanisms,research status and clinical significanceof TWA and HRT according to medical literatures.