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本文研究了云南地区１５００年以来Ｍ≥７级地震前３０年内震中周围１５０ｋｍ范围内５～６级地震的空间分布图象，震前平静是一个共同的特点，并大致可以分为三种类型：平静型—７级强震在平静７—１８年后突然发生；平静活跃型—在平静多年后，首先发生早期信号震，再发生７级强震；活跃型—平静多年后中强震持续活动十几年，接着发生强震。
This paper studies the spatial distribution of earthquakes of 5-6 earthquakes within 150km around the epicenter in the 30 years before M≥7 earthquakes in Yunnan Province. Pre-quake equilibration is a common feature and can be divided into three types: Quiet-type -7 strong earthquakes suddenly occur after 7-18 years of calm; Quietly active type- After serene years, an early signal shock occurs first and then a series of 7-magnitude strong earthquakes occur. Active-Quiet After many years, moderate-strong earthquakes continue to move Ten years later, a strong earthquake occurred.