Since 1967, there have been 20 earthquakes with magnitude above 4 in Chengdu * * *, and 8 earthquakes have caused some damage and losses, of which the largest earthquake occurred in Dayi County 1970 on February 24th, with magnitude of 6.2, 50 kilometers away from Chengdu (in a straight line). Since the establishment of 1999 Chengdu Digital Telemetry Seismic Network, more than 200 earthquakes 1200 have been recorded in Chengdu and its adjacent areas, including 42 felt earthquakes and 2 earthquakes that caused certain damage and loss.

1900 ~ 2000:

1900 Qionglai earthquake (Qionglai is 59 kilometers away from Chengdu)

In 2000 1900 ~ 100, there were 14 earthquakes in Longmenshan seismic belt. They are 1900 Chengdu Qionglai earthquake 19 13 Beichuan earthquake 1933 Lixian and Maoxian earthquakes 1940 Maoxian earthquake 194 1 Kangding earthquake and 65. 1958 Beichuan earthquake, 1970 Chengdu Dayi earthquake, 1976 Songpan-Pingwu earthquake, 1999 Mianzhu earthquake, etc. This shows that Chengdu and its surrounding Sichuan basin are high-risk areas for earthquakes.

Qionglai is also an earthquake-prone area, but it is characterized by a low magnitude, but the source is shallow and the harm is still great. The southwest edge of Qionglai area is controlled by Longmenshan piedmont fault, and the southeast direction is affected by Pujiang-Xinjin fault. The Mingshan-Dayi-Pengzhou concealed fault runs through Chengdu.