克山病是一种原因未明的地方性心肌病。尤其是潜在型克山病一般无自觉症状，通常心电图改变是主要的临床特征。我国各省（区）多年来对克山病进行了连续监测，检出的克山病患者多为潜在型。因此，研究克山病异常心电图的变化规律及其特征，对于本病的诊断有重要价值。鉴于此， Keshan disease is an unknown cause of endemic cardiomyopathy. In particular, underlying Keshan disease is usually no symptoms, usually ECG changes are the main clinical features. China’s provinces (autonomous regions) over the years conducted a continuous monitoring of Keshan disease, Keshan patients were detected mostly potential type. Therefore, the study of Keshan disease abnormal ECG changes and characteristics of the diagnosis of the disease has important value. Therefore,