对银川台记录极远震的特征进行了分析研究，并对其分析方法做了阐述，这将有助于提高极远震的分析水平，同时对国外的大震速报工作也将起到积极作用。 This paper analyzes the characteristics of far-flung earthquakes recorded by Yinchuantai and elaborates on its analytical methods, which will help to improve the analysis level of extreme earthquakes and at the same time it will also play a positive role in the earthquake reporting abroad effect.