Japanese	Tokyo University of Agriculture and Technology Environmental Geotechnical Laboratory Introduction We have recently many huge earthquakes and heavy rainfalls due to the global warming and active diastrophism. For examples, the magnitude of Sumatra offshore earthquake, which occurred in Dec. 2004, reached 9.3 and the tsunami due to this quake killed more than 300,000 peoples and damaged many facilities. Hurricane Katrina in Aug. 2005 gave fatal blows to New Orleans, Louisiana in USA. In Japan, the 2004 Niigata Chuetsu earthquake, which was a local earthquake with magnitude = 6.8, occurred in Oct. 2004. The quake subjected heavy damages to structures and facilities including agricultural ones. We had other earthquake named Noto peninsula earthquake this year. Slope failures and disasters of farms occur due to heavy rainfalls every year. Then, we are conducting research works to increase resistance powers of agricultural facilities and farms located mainly in Japan and South-east Asia to natural disasters on the base of environmental geotechnical engineering techniques (soil mechanics, finite element analyses, unsaturated soil behavior, elastoplastic theories). The researches are conducting under geo-environment rehabilitation and conservation. In our laboratory, we regard the research topics concerned with the environmental rehabilitation and conservation as the ones for increases of resistance powers to natural disasters and environmental conservation of agricultural facilities and farms. We use environmental geotechnical methods to conduct the research works. This figure shows the flow for solving the problems