本文分析了沪定台应变仪变化与道孚地震的相关性,认为应变仪在道孚震前有半年左右趋势异常,临震前有测数突跳,在孕震过程中有应变速率异常和主应力方向的改变。通过对震区一些其它前兆资料的对比分析,作者认为,泸定台应变仪变化,在一定程度上反映了道孚6.9级地震孕育过程中震源区及外围的应力应变状态。 In this paper, we analyze the correlation between the change of strain gauge in Shanghai and Taiwan and the Daofu earthquake. We think that the strain gauge has a trend of about half a year before the Daofu earthquake. Before the earthquake, there is a sudden jump in the measured value. During the seismogenic process, there are abnormal strain rates and The main stress direction change. By comparing and analyzing some other precursory data of the earthquake zone, the author believes that the variation of Ludingtai Strain Gauge reflects the stress-strain state of the source area and the periphery of the Daofu MS 6.9 earthquake in a certain extent.