Increased global natural disasters appear to be a trend due to global warming and fast economic development around the world. Finding ways to decrease and mitigate damage losses has thus become an important mission of all governments. With Taiwan being a place of high disaster risk, the Taiwanese government has invested many resources to develop systems to fight against natural disasters in the last ten years, and has gained invaluable experiences in utilizing modern ICT and GIS technology to mitigate disaster loss to share with other countries. Reconstruction also presents important issues for helping the healthy recovery of damaged areas or refugees, including engineering and non-engineering methods.