Japan's Kashiwazaki Kariwa nuclear power plant caused no serious accident in beyond de- sign basis earthquake.It proves that the Japanese nuclear power plants have the capacity of resist with be- yond design basis earthquake.It is worth closer attention on that the Japan how to examine,repair the nuclear plant and recover the operation of the plant.This article puts forward some views on the multi-reactor sites,earthquake and emergency,the responsibility of the owner and the investigation of the geology and earthquake.