对昆明地震台数字地震仪记录到的2010年2月27日智利Ms8.8地震的震相进行了分析，并将其与格尔木、高台、呼和浩特、成都、银川、兰州、西安等七个地震台的记录进行对比，提出了智利地震的记录特征、分析难点，并将JB表中Pdif波走时曲线的截止距离从150⁰延伸到了177.8⁰。同时介绍了如何确定疑难震相的分析方法。

We analyze the waveform of the M_S8.8 Chile Earthquake occurred on February 27, 2010 which is recorded by the digital seismometers at Kunming Seismic Station, and contrast it with those recorded by other seismic stations in China such as Geermu, Gaotai, Hohhot, Chengdu，Yinchuan，Lanzhou，and Xi’an. Thus, after finding the features of the waveform of the Chile Earthquake，we put forward some methods for identifying the difficult seismic phases of the earthquakes in Chile. In addition, We suggest that the maximum distance which the P_dif-phase can travel— defined as 150⁰  in the Jeffreys-Bullen Travel Time Table— can be expanded to 177.8⁰.