分析了 1995～ 1996年发生的云南孟连西 7 5级、武定以北 6 5级和丽江以北 7 0级三次强震前云南及邻近地区出现的地震活动背景性异常 ,包括地震空区、条带、小震群活动、地震窗口、诱发地震、强震原地复发以及迁移等特征。对地震活动期的分析表明 ,1988年澜沧 -耿马地震后云南地区处于强震活动高潮期 ,1993年区内发生 5 0～ 6 3级地震 7次 ,达到发生 7级以上强震的预报指标。这些地震活动背景异常为这 3次强震的趋势预报提供了科学依据 The background anomalies of seismic activity occurred in Yunnan and its adjacent areas before the 1995 strong earthquakes occurred at 1995 Kunlun MS19 5 in Yunnan Province, 65 in the north of Wuding and 70 in the north of Lijiang were analyzed. , Banding, small swarm activity, earthquake window, induced earthquake, strong earthquakes in situ recurrence and migration. The analysis of seismicity shows that the Yunnan region was in the climax of strong earthquakes after the Lancang-Gengma Earthquake in 1988, and the earthquakes of 5 0 to 6 3 occurred in 1993 in the region of 7 times, resulting in the prediction of strong earthquakes of magnitude 7 or above index. These background anomalies of seismicity provide the scientific basis for the trend forecast of the three strong earthquakes