A large landslip, occured on June 21, 1988 in Chaoyang commune ofShangrao County, Jiangxi Province, smashed Xiayuan village completelyand killed 78 persons with a lot of property lost. It is advanced to reinforce the popularization and propagating in sciences to induce notice of thewhole society; to survey and plan comprehensively, to observe and prodictin stress, it is thought that the prevention is the major task and dangerousor urgent points be controlled in advance. The occuring of hill collapse,landslip and debris flow is with time, region, condition, inducementand indicators, so long as the rules are mastered, the disaster can beprevented, that man can conquer nature could be realized.