针对地震台站使用的SS-Y伸缩仪，对其常见的异常现象进行分析判断，并给出维护方法。以便于观测、维护人员识别，对地震前兆台站管理人员有一定的指导意义，最后就台站观测中发现的问题提出建议。

The typical troubles of the SS-Y extensometer working at selsmostationa are analyzed and the maintenance method are given. In order to observation, maintenance personnel, to identify earthquake precursor station management personnel has certain directive significance, finally observation stations, the problems found in put forward some Suggestions.