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研究了孟连７．３级地震前云南全省及震中距６００ｋｍ范围内跨断层短水准、短基线、地倾斜、水氡、水位、水汞等１３类观测项目，５５个台站，１５１个台项测值的中、短、临异常情况。结果表明，震前中、短、临异常台项百分比为３８％，并主要集中在２００—４００ｋｍ范围。中期异常特征为异常时间长、幅度大。短临异常特征为中期异常趋势结束或测值反向，部分项目出现“巨变”异常及震中附近异常出现晚而外围出现早，随着地震临近其异常月台项数增多。
Thirteen kinds of observation items such as short leveling, short baseline, ground tilt, water radon, water level and water mercury within 55km range of Yunnan province and epicentral distance before the M 7.3 magnitude earthquake were studied. 55 stations, 151 Taiwan items measured in the short, temporary abnormal situation. The results show that the percentage of anomalous stations in the anomalies before and after the earthquake was 38% and mainly concentrated in the range of 200-400km. Mid-term abnormalities characterized by abnormal long time, amplitude. The short-term anomaly is characterized by the end of the anomalous trend in the medium term or the reverse of the measured value. Some of the projects show “catastrophic” anomalies and late occurrences of anomalies near the epicenter appear earlier, with the number of anomalous platforms increasing near the earthquake.