We can't avoid that the buildings destroy by unexpected power, so it seems to be effective that the restorations are coped by fixing Earthquake Insurance System. Then in this paper comparison between American Earthquake Insurance System and Japanese is investigated. The authors estimated Earthquake Risk for the buildings by using Geographic Information System (GIS) and compared with the calculating way of the present premium rate. Consequently, in Japan the entry rate is low because of the high premium and in America Insurance market restored gradually by California Earthquake Authority (CEA), but it is hard to say that the system functions effectively. The case study using GIS show that there is a difference between the result and the present premium.
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